anonymous
  • anonymous
I need help with polynomials!!! I have watched multiple videos and read my math book, but I still don't get it. Here is the problem I need help with. y^2 represents an exponent 3x^2 + 6 -2x + 5x - 4x^2 + 9
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!
jim_thompson5910
  • jim_thompson5910
3x^2 and -4x^2 are like terms so you just add the coefficients to get 3 + (-4) = -1 this means 3x^2 + (-4x^2) = -1x^2 = -x^2
jim_thompson5910
  • jim_thompson5910
you do the same for the other like terms
jim_thompson5910
  • jim_thompson5910
giving out the answer is against the code of conduct and it doesn't help anyway

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anonymous
  • anonymous
you add together the like terms so: 3x^2-4x^2= -1x^2 -2x+5x=3x 6+9=15
anonymous
  • anonymous
I don't want the answer I just need to know how to do it
anonymous
  • anonymous
sorry jim_thompson5910 I was going to explain how I got my answer too
jim_thompson5910
  • jim_thompson5910
alright, do it in the opposite order next time
anonymous
  • anonymous
I just hit the wrong button.. sorry =(
jim_thompson5910
  • jim_thompson5910
thats ok
anonymous
  • anonymous
So would it be7x^2 + 15 +7x
jim_thompson5910
  • jim_thompson5910
it would be 7x^2 IF the 4x^2 was positive but it's not
jim_thompson5910
  • jim_thompson5910
same for the x terms 2x is not positive, so it's NOT 7x
anonymous
  • anonymous
the negative sign goes with the number directly behind it so: 2x-5+7x+8 2x+7x=9x -5+8=3
jim_thompson5910
  • jim_thompson5910
look back up at my first post to see how to combine the x^2 terms
anonymous
  • anonymous
So -1^2?
jim_thompson5910
  • jim_thompson5910
-1x^2 yes or just -x^2
anonymous
  • anonymous
Ok. Thank you guys so much! I think I understand it now.
jim_thompson5910
  • jim_thompson5910
yw
anonymous
  • anonymous
glad to help

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