Question

Find the sum of 3x2−7x+5 and x2−4x−9, subtract 5x2−8x−7.

Question 4 options:

−x2−3x+3

−x2−19x−11

x2−3x+3

−x2+3x−3

Answer 1

-x2 -3x + 3

Explanation:

(3x2-7x+5)+(x2-4x-9)-(5x2-8x-7)

4x2-11x-4 -5x2 +8x+7

-x2-3x+3