Question

If f(x)=(x-2)²-x³, what is f(-3)-f(3)

Answer 1

78

Explanation:

f(-3) means replace the x with -3.

f(-3) = (-3 - 2)² - (-3)³ = (-5)² - (-27) = 25 + 27 = 52.

f(3) = (3 - 2)² - (3)³ = (1)² - 27 = -26.

so f(-3) - f(3) = 52 - -26 = 52 + 26 = 78.