What does (2x^2+3x-4) + (x^2-x-2) equal?

3x2+2x+2

Step-by-step explanation:

(2x2+3x+4) + (x2-x-2)

2x2+3x+4+x2-x-2

Like terms

1) numbers without variables: + 4 and - 2

2) numbers with a single x variable: + 3x and - x

3) numbers with a x2 variable: + 2x2 and + x2

Combine like terms

1) + 4-2=2

2) + 3x-x=2x

3) + 2x2+x2=3x2

Add the combined terms together to get your answer

3x2+2x+2