Question

Evaluate 2x^(3)-3x^(2)+4 for x=-2

Answer 1

Substitute x=-2 into the expression 2x^(3)-3x^(2)+4:

2(-2)^(3) - 3(-2)^(2) + 4
= 2(-8) - 3(4) + 4
= -16 - 12 + 4
= -28 + 4
= -24

Therefore, when x=-2, the value of 2x^(3)-3x^(2)+4 is -24.