Question

Simplify: (x2 − 8x + 5) + (−3x2 + 5x − 9)

Answer 1

Combine like terms (those with same number of variables)

x² + (-3x²) = -x²

-8x + 5x = -3x

5 - 9 = -4

-x² - 3x - 4 is your answer

hope this helps