Chapter 14.5, Problem 25PPS

To determine

To multiply:The given expression.

Answer to Problem 25PPS

The expression after multiplication is $y^3+3y^2-4y-12$ .

Explanation of Solution

Given information:

The expressionis $\left(y+3\right)\left(y^2-4\right)$ .

Calculation:

Consider the expression.

  $\begin{array}{c}\left(y+3\right)\left(y^2-4\right)=y^2\left(y+3\right)-4\left(y+3\right)\\ =y^3+3y^2-4y-12\\ \end{array}$