Question

What is the sum of P(x) and Q(x) if P(x) = 4x² + 6x - 9 and Q(x) = -7x² - 12x + 8?

Answer 1

-3x²-6x+17

Explanation:

P(x)+Q(x)

(4x²+6x-9)+(-7x²-12x+8)

4x²+6x+9-7x²-12x+8

(4x²-7x²)+(6x-12x)+(9+8)

-3x²-6x+17