Chapter 11.9, Problem 21E

To determine

To simplify the expression

Answer to Problem 21E

The expression is simplified as,

$-3+4s^2+1-7s^2=-3s^2-2$

Explanation of Solution

Given information : the expression is given as,

$-3+4s^2+1-7s^2$

Calculation : the given expression can be simplified as,

$\begin{array}{l}-3+4s^2+1-7s^2=4s^2-7s^2-3+1\left[\text{group like terms}\right]\\ -3+4s^2+1-7s^2=-3s^2-2\left[\text{subtract like terms}\right]\end{array}$

Therefore, the expression is simplified as,

$-3+4s^2+1-7s^2=-3s^2-2$