Chapter 14.5, Problem 13PPS

To determine

To multiply:The given expression.

Answer to Problem 13PPS

The expression after multiplication is $z^2+2z-24$ .

Explanation of Solution

Given information:

The expressionis $\left(z+6\right)\left(z-4\right)$ .

Calculation:

Consider the expression.

  $\begin{array}{c}\left(z+6\right)\left(z-4\right)=z\left(z-4\right)+6\left(z-4\right)\\ =z^2-4z+6z-24\\ =z^2+2z-24\end{array}$