Answer:
Explanation:
3х^2 - х + 7 + 5х + 2 – 2х^2
Combine like terms. Like terms have the same variables and the same exponents.
3x^2 and -2x^2 are like terms and can be combined.
-x and 5x are like terms and can be combined.
7 and 2 are like terms and can be combined.
3х^2 - х + 7 + 5х + 2 – 2х^2 =
= 3х^2 – 2х^2 - х + 5х + 7 + 2
= x^2 + 4x + 9