Question

Evaluate the polynomial when (a) x=0 and (b) x=-2. -x^(3)+8x^(2)-15

Answer 1

when x=0 -> -15

when x= -2 -> 25

Explanation:

when x=0 -> 0^3+8(0^2)-15 -> -15

when x= -2 -> -(-2)^3+8(-2)^2-15 -> 8+32-15-> 40-15 -> 25