## toxicsugar22 5 years ago hi who can help me

1. anonymous

with?

2. toxicsugar22

Find the first terms of the product in ascending powers. (1-2x^2-x^4)(4+x^2-2x^4)

3. toxicsugar22

i know u helped me before but i am stuck

4. toxicsugar22

5. anonymous

oh ive already done this for you in detail. i dont understand why you keep reposting this.

6. toxicsugar22

no this is a diffeent one and i am stuck

7. anonymous

(a+b)(c+d) = ac+ad+bc+bd. similarly expand your problem and post what you get

8. toxicsugar22

1-4+x^2+x^4

9. toxicsugar22

is it right

10. toxicsugar22

can u help me

11. toxicsugar22

12. anonymous

hold on. stop spamming. let me read what you posted,

13. anonymous

LOL I THOUGHT THE SAMMEEE THING

14. toxicsugar22

what

15. anonymous

no that is wrong, toxic

16. toxicsugar22

ok can u help me further Ill repay you

17. anonymous

repay me with what?

18. toxicsugar22

nm

19. toxicsugar22

20. toxicsugar22

or can u tell me a wesite that provides free online tutoring

21. anonymous

22. anonymous

do you understand algebra?

23. toxicsugar22

yes

24. toxicsugar22

but not really

25. anonymous

okay. then you understand that (a+b)(c-d) = ac -ad +bc - bd ?

26. toxicsugar22

yes

27. toxicsugar22

well

28. toxicsugar22

well hello

29. anonymous

then do you understand that $(1-2x ^{2}-x ^{4})(4+x ^{2}-2x ^{4})$ is equal to $(1 \times 4 +1 \times x ^{2}-1 \times 2x ^{2}) -(2x ^{2} \times4+2x ^{2}\times x ^{2}-2x ^{2}\times 2x ^{4})$ $-(x ^{4}\times 4 +x ^{4} \times x ^{2}-x ^{4}\times 2x ^{4})$ ?

30. toxicsugar22

yes

31. toxicsugar22

ok

32. anonymous

can you add all the x terms and x^2 terms and so on and post it here?

33. anonymous

i am sorry, the first term in the equation i posted has -1 times 2x^2 in the end, it is supposed to be -1 times 2x^4

34. toxicsugar22

-5+x^2-7x^2

35. toxicsugar22

i guess is it right

36. anonymous

no its not

37. anonymous

where did you get -5 from?

38. toxicsugar22

oops sorry 4

39. toxicsugar22

help me

40. toxicsugar22

41. anonymous

yes 4 is the first one.

42. anonymous

-7x^2 is also correct

43. anonymous

your answer is wrong. -5+x^2-7x^2 cannot be the answer. where did you get x^2-7x^2 from? isn't that just -6x^2?

44. toxicsugar22

45. toxicsugar22

is it 4-7x^2-6x^2

46. toxicsugar22

is it right can u hel p

47. anonymous

why do you have a -6x^2 there? -7x^2 - 6x^2 = -13x^2

48. anonymous

49. anonymous

can you just use the expansion I gave you and write out fully what you would get?

50. anonymous

51. toxicsugar22

ok i got 4-7x^2-6x^23

52. toxicsugar22

is it right if not can u help me

53. anonymous

what do you mean by 6 x^23?

54. toxicsugar22

sorry 6x^2

55. anonymous

I am not gonna help you until you write down and expand the expression I gave you.

56. anonymous

that is the only way you will get the answer. you are just guessing the answer here.

57. toxicsugar22

didnt i do that

58. anonymous

no you did not.

59. toxicsugar22

i dont know what u mean

60. toxicsugar22

can u explain

61. anonymous

is it that hard to multiply 4 times 1?

62. toxicsugar22

4

63. anonymous

right. so scroll up. and do all the multiplications I showed you in my expression and post your answer. then we will figure out the answer together.

64. anonymous

(1×4+1×x^2−1×2x^4) = (4 +x^2 -2x^4) similarly write down the other two separately and post them here

65. toxicsugar22

i am sorry for being diffuct but i dont get what u said

66. anonymous

then you shouldn't take math. Sorry I cannot help you any more.

67. anonymous

68. toxicsugar22

ok i got it

69. toxicsugar22

canu just write down the second equation for me i see it but can u do that for me so i can copy and paste

70. anonymous

no.

71. toxicsugar22

ok i got -4x^2+2x^4+8x^2

72. toxicsugar22

is it right

73. toxicsugar22

and can u not be rue

74. toxicsugar22

rude

75. toxicsugar22

is it right

76. anonymous

no it is not. do you know what a^2 times a^2 =?

77. toxicsugar22

a^4

78. anonymous

(2x^2×4+2x^2×x^2−2x^2×2x^4) = ?

79. anonymous

(2x^2×4+2x^2×x^2−2x^2×2x^4) = ( (2x^2×4) + (2x^2×x^2) − (2x^2×2x^4) )

80. anonymous

now multiply the individual products within each brackets and write down the answer

81. toxicsugar22

8x^2+2x^4-4x^6

82. toxicsugar22

is it right

83. anonymous

yes thats right. now do the last one too and post your answer

84. toxicsugar22

-4x^6

85. toxicsugar22

right

86. anonymous

no i meant the third expression in the big expression I gave you

87. anonymous

(x^4×4+x^4×x^2−x^4×2x^4) = ?

88. toxicsugar22

ok i got -2x^8+x^6+4x^4

89. toxicsugar22

is it right

90. anonymous

yes. that is right.

91. anonymous

so now do (4 +x^2 -2x^4) - (8x^2+2x^4-4x^6) - (-2x^8+x^6+4x^4) and post your answer

92. toxicsugar22

ok i got -8x^4-7x^2+4+3x^6-2x^8

93. toxicsugar22

is it right

94. anonymous

yes thats right. now just write this expression in ascending powers.

95. toxicsugar22

ok 4-7x^2-8x^4

96. toxicsugar22

is it right

97. anonymous

those are the first three terms in ascending powers of x

98. anonymous