Question

The volume of a rectangular prism is given by the following function:

V(x) = 2x³ + x² - 16 - 15
The length of the rectangular prism is (x − 3) and the width is (2x + 5). What is the height?

Answer 1

`v(x) = wlh \\ 2x {}^(3) + {x}^(2) - 16 x- 15 =(2x + 5)(x - 3)h \\ h = \frac{2x {}^(3) + x {}^(2) - 16x - 15 }{2x {}^(2) - x - 15 } \\ using \: long \: divison \\ h = x + 1`