Question

5x^6–3x^2+7–2x^6–3x^6+4x^2 for x=−10

Answer 1

107

Explanation:

These are easier to do if you simplify them first.

... = x^6(5 -2 -3) +x^2(-3 +4) +7

... = x^2 +7

For x = -10, this is

... (-10)^2 +7 = 100 +7 = 107