(5 - 2x + 3x^2 + x^3) - (-2 + x - x^3)
Combine like terms, right?
5 and -2
-2x and x
x^3 and -x^3
3 -1x + 3x^2 - x^3
Is this right?
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The second group of terms has a minus sign in front. Please recheck your work.
first remove the brackets by expanding in the minus sign.
7 - 3x + 3x^2 + x^3
Okay, that makes sense. I forgot to switch the signs.
Is this correct?
Okay, thanks. I wasn't sure if I was supposed to make it 2x or not. Got it.
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