combining like terms

## 5x^2-6-12x^2+12+2x

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# 1 Answer

Hi there. Like terms are terms that have the same variable factors. 2x and 2y are not like terms, but 5x and -8x are like terms. x^{2} and x are NOT like terms, because x^{2}=x*x (it has two variable factors). In an expression, find the like
terms and add their coefficients to combine like terms.

5x^{2}-6-12x^{2}+12+2x

-7x^{2} + 2x
+ 6

Don't add exponents. Remember that x*x = x^{2} but 2x = x + x.