Question

Simplify (-x^2 – 28x + 7) + (-7x^2 + 14x + 8).

Answer 1

Add numbers with the same amount of variables

-x^2 + (-7x^2) = -8x^2

– 28x (+ 14x )= -14x

7 (+ 8) = 15

-18x² - 14x + 15 is your answer

hope this helps