We wish to maximize the volume, so we must now write an equation for the volume of the box

Question

Recall that the volume of a box is given by V = lwh, where l = length, w = width, and h = height. We previously determined that l = 24 − 2x, w = 9 − 2x, and h = x. Use these expressions to write an equation for the volume V of the box in terms of x.

v=lwh

v(x)=(24-(__)x)(9-2x)(x)

= 4x^3-66x^2+(___)x

Answer 1

Seems they're just asking you to expand the expression by foiling (24 - 2x)(9 - 2x)x = (216 -66x + 4x²)x = 4x³ - 66x² + 216x. The first blank is obviously 2, and the second blank 216.