Chapter 0, Problem 11PR

To determine

the product.

Answer to Problem 11PR

The product is $\left(t-9\right)\left(t+4\right)=t^2-5t-36$

Explanation of Solution

Given information:

  $\left(t-9\right)\left(t+4\right)$

Evaluating the product,

  $\begin{array}{c}\left(t-9\right)\left(t+4\right)=t\left(t+4\right)-9\left(t+4\right)\\ =t^2+4t-9t-36\\ =t^2-5t-36\end{array}$

So,

The product is $\left(t-9\right)\left(t+4\right)=t^2-5t-36$