Chapter 11.2, Problem 39CCR

To determine

To find: Solve given equation.

Answer to Problem 39CCR

Solutions are $9.2$ and $-9.2$

Explanation of Solution

Given information:

  $168=2p^2$

  $168=2p^2$

On solving

We get

  $\begin{array}{l}168=2p^2\\ \Rightarrow 2p^2=168\\ \Rightarrow p^2=\frac{168}{2}\\ \Rightarrow p^2=84\\ \Rightarrow p=\sqrt{84}\\ \Rightarrow p=\pm 9.2\end{array}$

Therefore,

Solutions are $9.2$ and $-9.2$