anonymous
  • anonymous
Find the sum of 7a^3+14a+12 and -6a^3+12a^2-7
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
How do I solve this? It's a bit different from my last question...
madhu.mukherjee.946
  • madhu.mukherjee.946
just add the like terms together and then say what do you get?
anonymous
  • anonymous
I had a^3+26a+10 but I know that's not right.

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More answers

madhu.mukherjee.946
  • madhu.mukherjee.946
7a^3+14a+12 + -6a^3+12a^2-7 =a^3+12a^2+8a+5
anonymous
  • anonymous
Can you explain how you did that?
madhu.mukherjee.946
  • madhu.mukherjee.946
yes
madhu.mukherjee.946
  • madhu.mukherjee.946
7a^3-6a^3=a^3 {both are like terms}
madhu.mukherjee.946
  • madhu.mukherjee.946
you have only one term 12a^2 and there is no other term with a^2 so,12a^2+0=12a^2
anonymous
  • anonymous
oh but the - in front of 6 is not for subtracting. it wants me to add -6 to 7
madhu.mukherjee.946
  • madhu.mukherjee.946
14a-6a=8a{again both like terms}
madhu.mukherjee.946
  • madhu.mukherjee.946
no it wants you to subtract because you have a -ve sign in front of 6
madhu.mukherjee.946
  • madhu.mukherjee.946
you gotta check for like terms and see their symbols carefully and then you gotta add or subtract accordingly
madhu.mukherjee.946
  • madhu.mukherjee.946
again 12-5 =7
anonymous
  • anonymous
"find the sum" so 6 is negative. but 7+ negativ 6 is the same as 7 minus 6 right?
madhu.mukherjee.946
  • madhu.mukherjee.946
yeah
madhu.mukherjee.946
  • madhu.mukherjee.946
anything more you want to know?
anonymous
  • anonymous
No I'm pretty sure I understand this tyope of question now. I may have another in a second so i'll check that first.
madhu.mukherjee.946
  • madhu.mukherjee.946
okay
madhu.mukherjee.946
  • madhu.mukherjee.946
may i have my medal please:P
anonymous
  • anonymous
sure how do i do that
madhu.mukherjee.946
  • madhu.mukherjee.946
just click on the best response option
anonymous
  • anonymous
just to clarify -4x^2 -7x^2 x^2 ------ -10x^2 assuming i'm adding the polynomials?
madhu.mukherjee.946
  • madhu.mukherjee.946
correct
anonymous
  • anonymous
ok thanks!!!
madhu.mukherjee.946
  • madhu.mukherjee.946
welcome!:)are you new here
anonymous
  • anonymous
yes i am lol. i have one (hopefully last for now XD) question for you.
madhu.mukherjee.946
  • madhu.mukherjee.946
welcome to openstudy!!
madhu.mukherjee.946
  • madhu.mukherjee.946
say your question
anonymous
  • anonymous
-4x^2+3xy- y^2 -7x^2- xy +6y^2 x^2+4xy-2y^2 --------------- my answer -10x^2+6xy-(-3y^2)
anonymous
  • anonymous
i think something is wrong with it...
madhu.mukherjee.946
  • madhu.mukherjee.946
wait
madhu.mukherjee.946
  • madhu.mukherjee.946
nope its partially correct:)
madhu.mukherjee.946
  • madhu.mukherjee.946
-10x^2+6xy+3y^2
anonymous
  • anonymous
partially? ok what is the incorrect part?
madhu.mukherjee.946
  • madhu.mukherjee.946
that -(-3y^2)
anonymous
  • anonymous
ok so it is +3y^2
madhu.mukherjee.946
  • madhu.mukherjee.946
what is 6-1-2
anonymous
  • anonymous
my school program is telling m there should be one more symbol/digit in there somewhere... 6-1-2 is 3
madhu.mukherjee.946
  • madhu.mukherjee.946
good
anonymous
  • anonymous
ok well i guess it'll tell me what it's looking for when i send in the answers. but the way you showed me does look right.
madhu.mukherjee.946
  • madhu.mukherjee.946
nope this is correct but i don't know if you have posted correctly
anonymous
  • anonymous
i think i did. my program likes to mess with me haha
anonymous
  • anonymous
wait i know hat i did XD. I put 6x instead of 6xy. I got it now. Thank you!!!
madhu.mukherjee.946
  • madhu.mukherjee.946
okay:)
madhu.mukherjee.946
  • madhu.mukherjee.946
don't get panicked just keep yourself calm:)
madhu.mukherjee.946
  • madhu.mukherjee.946
before you do maths just sit and breathe in and out deeply from your heart and try to feel your inner core,this will give you immense help and concentration:)

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