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janice1989 Group Title

Hello, I am trying to help my son with his algebra! but i am just having hardest time! can someone please help me?

  • one year ago
  • one year ago

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  1. hartnn Group Title
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    Hi @janice1989 \[ \begin{array}l\color{red}{\text{W}}\color{orange}{\text{E}}\color{#e6e600}{\text{L}}\color{green}{\text{C}}\color{blue}{\text{O}}\color{purple}{\text{M}}\color{purple}{\text{E}}\color{red}{\text{ }}\color{orange}{\text{t}}\color{#e6e600}{\text{o}}\color{green}{\text{ }}\color{blue}{\text{O}}\color{purple}{\text{P}}\color{purple}{\text{E}}\color{red}{\text{N}}\color{orange}{\text{S}}\color{#e6e600}{\text{T}}\color{green}{\text{U}}\color{blue}{\text{D}}\color{purple}{\text{Y}}\color{purple}{\text{ }}\color{red}{\text{:}}\color{orange}{\text{)}}\color{#e6e600}{\text{}}\end{array} \]

    • one year ago
  2. hartnn Group Title
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    how can we help you ? do you have any specific qustion ?

    • one year ago
  3. janice1989 Group Title
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    Yes can you give me a min? I am not sure how to really work this nad help my son, he has special needs! so he has hard time understanding it and im just stuck! and the teachers dont help at all! im just os stressed out!

    • one year ago
  4. hartnn Group Title
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    don't worry, i will try my best to help you :)

    • one year ago
  5. hartnn Group Title
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    you just post the question you have difficulty with.

    • one year ago
  6. janice1989 Group Title
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    Okay, Sorry it took so long to reply he got one asnwer right hold on whille i type the ones we need help with! What is your name?

    • one year ago
  7. hartnn Group Title
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    my name is hartnn, janice :) you can call me that

    • one year ago
  8. janice1989 Group Title
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    Okay!

    • one year ago
  9. janice1989 Group Title
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    The expression 5x^2+x-10 has ___ terms and a constand of ____

    • one year ago
  10. janice1989 Group Title
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    Oh i forgot answers

    • one year ago
  11. janice1989 Group Title
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    3,-10 3,10 6,-10 6,10 My son said B

    • one year ago
  12. hartnn Group Title
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    3 terms are correct! 5x^2 -> one term +x ->2nd term -10 -> 3rd term but the constant is the term with no ''x" in it, which is ... ?

    • one year ago
  13. janice1989 Group Title
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    -10 he said

    • one year ago
  14. hartnn Group Title
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    and he is correct! :)

    • one year ago
  15. janice1989 Group Title
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    So the answer would be A than correct?

    • one year ago
  16. hartnn Group Title
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    yes, A would be correct.

    • one year ago
  17. janice1989 Group Title
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    He is smiling ear to ear he got it right! you can explain it a lot better than i could, there is some more if you dont mind helping with !

    • one year ago
  18. hartnn Group Title
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    i don't mind, at all :)

    • one year ago
  19. joemagee Group Title
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    Janice, thanks for using OpenStudy. Do tell other parents about us. Hartnn is one of our senior, most skilled and patient OpenStudiers! There are many like him on the site to help. They do it because they love Math and helping young learners.

    • one year ago
  20. janice1989 Group Title
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    the expression 9x^2-5x-7 has __ terms and a constant of ___ 3,-7 5,-7 3,7 -5,7 He said there is 5 terms and a constant of -7 since its right after the x. so he said it would be B correct?

    • one year ago
  21. Preetha Group Title
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    Good work Hartnn!

    • one year ago
  22. janice1989 Group Title
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    I will for sure tell other parents about it! Ive been stuck on this for such a long time, And someone told me about it, this is an amazing website, Do you also do Geometry?? My daughter is doing geometry and also has special needs she has Aspergers and is having such a hard time with it.. and she is just stressed and all!

    • one year ago
  23. hartnn Group Title
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    thank you for the appreciations, yes, i do geometry too :) lets count the terms in , 9x^2-5x-7 9x^2 -5x -7 how many ?

    • one year ago
  24. janice1989 Group Title
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    Than after we finish this up maybe later on you could help my daughter? And he said 3 :)

    • one year ago
  25. janice1989 Group Title
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    so instead he said would it be A than?

    • one year ago
  26. hartnn Group Title
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    A is correct :)

    • one year ago
  27. janice1989 Group Title
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    Woohoo you are amazing!!!

    • one year ago
  28. janice1989 Group Title
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    In 6x^4-3y+5x^4-10 what are the like terms in the expression choose all that apply.. 6x^4 -3y 5x^4 -10 he said all of them

    • one year ago
  29. hartnn Group Title
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    you will find many amazing users here on OpenStudy, willing to help you as much as i am :)

    • one year ago
  30. hartnn Group Title
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    like terms are those which have same exponent of 'x' like x^3, -3x^3, 8x^3 .... (one set of like terms) x,4x,9x,-x,.... and constants like 4,8,0,-1,....

    • one year ago
  31. hartnn Group Title
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    in 6x^4-3y+5x^4-10 which terms have same exponent of x ?

    • one year ago
  32. janice1989 Group Title
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    so would it be A & C

    • one year ago
  33. hartnn Group Title
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    does your boy say/agree with A and C too ?

    • one year ago
  34. janice1989 Group Title
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    Yeah he said that, i am just typing for him because he is little bit slow on typing! :D

    • one year ago
  35. hartnn Group Title
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    tell him he is absolutely correct :)

    • one year ago
  36. janice1989 Group Title
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    Okay :D hold on he is working on next one to see if he can get it, who would have known a stranger online could help so much more than a teacher!

    • one year ago
  37. hartnn Group Title
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    now you know :)

    • one year ago
  38. janice1989 Group Title
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    Simplify : 7x^2+2x^2 7x^2 9x^2 14x^4 9x^4 He said he is not sure what to do can you explain it step by step? He said it would either be A or B since the top number are both 2. or do you add them together?

    • one year ago
  39. janice1989 Group Title
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    He said would it be B? since 7+2 = 9??

    • one year ago
  40. hartnn Group Title
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    the top number (here 2) is called the exponent. does he know what an exponent is ? and yes, B is correct, because 7x^2+2x^2 = (7+2)x^2 = 9x^2

    • one year ago
  41. janice1989 Group Title
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    He said hes heard of it, but isnt really sure what it is.

    • one year ago
  42. hartnn Group Title
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    i'll explain, x^n, x is called the 'base' and n is called the exponent. x^n implies , multiplying 'x' to itself, 'n' times. we take an example : 2^4 will imply multiplying 2 4 times = 2*2*2*2 = 16 similarly, x^2 will imply multiplying x with itself twice, x*x got this ?

    • one year ago
  43. janice1989 Group Title
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    he said oh that is what exponent is i know now! lol. Thank you, hes working on the next one :)

    • one year ago
  44. janice1989 Group Title
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    Subtract the second expression from the first (5x^2-3x+5)-(3x^2-4x-7) 2x^2+x+12 2x^2-7x+12 8x^2+x+12 2x^2+x-2 He said would it be B?

    • one year ago
  45. hartnn Group Title
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    why B , how did he get co-efficients like 2,-7 and 12 ?

    • one year ago
  46. janice1989 Group Title
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    He says he dont know, i think he was guessing. He does that a lot. Im sorry!

    • one year ago
  47. hartnn Group Title
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    (5x^2-3x+5)-(3x^2-4x-7) = 5x^2 -3x +5 -3x^2 - (-4x) - (-7) {by distributing the negative} = 5x^2 -3x +5 -3x^2 +4x +7 {because negative times negative becomes positive!} then we identify like terms. but is this much clear ?

    • one year ago
  48. janice1989 Group Title
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    he said for like terms would it be 5x^2 -3x -3x^2 and 4x?

    • one year ago
  49. hartnn Group Title
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    for like terms , the exponent of x should be same, for which terms exponent of x is 2 ? for which terms exponent of x is 1 ?

    • one year ago
  50. hartnn Group Title
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    note x means x^1 , both mean the same

    • one year ago
  51. janice1989 Group Title
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    he said he is confused. he said he dont get that,

    • one year ago
  52. hartnn Group Title
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    ok, the 5x^2 and -3x^2 has exponent of 2 so these are like terms and we can combine them in this way, 5x^2-3x^2 = (5-3)x^2 = 2x^2 got this?

    • one year ago
  53. janice1989 Group Title
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    got it he said

    • one year ago
  54. hartnn Group Title
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    cool, from this : 5x^2 -3x +5 -3x^2 +4x +7 the other like terms are -3x and +4x (because they both contains just x with it, not x^2 or x^3 .....) so we can combine them like : -3x+4x = (-3+4) x = ... ?

    • one year ago
  55. janice1989 Group Title
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    he said uh he thinks you can combine them not 100% sure

    • one year ago
  56. hartnn Group Title
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    yes, they can be combined because they both have same exponent (=1 here) so, -3x+4x = (-3+4) x = -x lastly, what remains are just constants, 7+5 , which =12

    • one year ago
  57. janice1989 Group Title
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    ok he got this,

    • one year ago
  58. janice1989 Group Title
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    he understands whats next step?

    • one year ago
  59. hartnn Group Title
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    so, finally, putting the results together, 2x^2-x+12

    • one year ago
  60. janice1989 Group Title
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    ok got it

    • one year ago
  61. janice1989 Group Title
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    distribute and simplify 7(2x-4)+2(3x+1) 20x+26 20x-26 14x-28 6x+2 He asked what is it to distribute???

    • one year ago
  62. hartnn Group Title
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    Distribution Property : a(b+c) = ab+ac |dw:1379629904908:dw| ask if you need an explanation in words....

    • one year ago
  63. janice1989 Group Title
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    ok he said he got it so far

    • one year ago
  64. hartnn Group Title
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    |dw:1379630067115:dw| so can he fill that now ?

    • one year ago
  65. janice1989 Group Title
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    7 2x + 7-2

    • one year ago
  66. hartnn Group Title
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    the operation is actually of multiplication while distributing, a(b+c) = a*b + a*c so, that will be = 7*(2x) + 7*(-4) got this ? and simplify this further

    • one year ago
  67. hartnn Group Title
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    like 7*(-4) = -28,

    • one year ago
  68. janice1989 Group Title
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    14 &-28correct he said?

    • one year ago
  69. hartnn Group Title
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    yeah, just don't forget the 'x' too 7*2x = 14x 7*(-4)=-28 so, the first part 7(2x-4) = 14x-28 in same way, please try the second part, 2(3x+1)

    • one year ago
  70. janice1989 Group Title
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    2*(3x) + 2(1)

    • one year ago
  71. hartnn Group Title
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    good! and whats 2*3x = ... ?

    • one year ago
  72. janice1989 Group Title
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    6 dalton said

    • one year ago
  73. hartnn Group Title
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    2*3x = 6x (again, don't forget the 'x') so we have 7(2x-4) +2(3x+1) = 14x-28+6x+2 we have distributed successfully, now time to combine like terms, tell him to try first.

    • one year ago
  74. janice1989 Group Title
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    2x, 3x?? and 14x and 6x?

    • one year ago
  75. hartnn Group Title
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    from this 14x-28+6x+2 there are only 2 terms containing 'x' , right ? so what is 14x+6x =....?

    • one year ago
  76. janice1989 Group Title
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    yes. 20x

    • one year ago
  77. hartnn Group Title
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    the constants, -28+2 =... ? and so the final answer will be ?

    • one year ago
  78. janice1989 Group Title
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    -30

    • one year ago
  79. hartnn Group Title
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    -28+2 is not -30

    • one year ago
  80. janice1989 Group Title
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    -26 that look like a - instead of a +

    • one year ago
  81. hartnn Group Title
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    -28+2 = - (28-2) = - (26) yes.

    • one year ago
  82. janice1989 Group Title
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    there is 2 more questions could you help out with?

    • one year ago
  83. hartnn Group Title
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    yes, go ahead with them, lets crack them together! :)

    • one year ago
  84. janice1989 Group Title
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    evaluate the expression 2(x+y) ---------- for x=6 and y=7 3 13/3 19/3 20/3 26/3 he said its look like this 2(6+7) ------- 3 he said would the answer be 26/3??

    • one year ago
  85. hartnn Group Title
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    yes, he is correct! congratulate him on my behalf :)

    • one year ago
  86. janice1989 Group Title
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    Evaluate the expression 3x+4y --------- x=1.5 and y=2.5 2 2 4.25 6.25 7.25 His work 3(1.5) +4(2.5) -------------- 2 would it be 7.25?

    • one year ago
  87. hartnn Group Title
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    lets check, 3(1.5) + 4(2.5) = 4.5+10 = 14.5 is the numerator. and 14.5/2 = 7.25 is the correct answer! :) :)

    • one year ago
  88. janice1989 Group Title
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    Woohoo Thank you sooo soo much Hartnn!! :) You are amaizng! you did such a great job! :D You are beyond smart!! :D

    • one year ago
  89. hartnn Group Title
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    you are welcome janice :) even i am glad that i could help you. and i want to request your son to practice more problems. with good amount of practice, your son can be smarter than me :)

    • one year ago
  90. Preetha Group Title
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    Janice, glad Hartn could help your son. Do come back and help OpenStudy grow by spreading the word to other parents and friends. Thanks.

    • one year ago
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