Chapter SH, Problem 10.2.17EP

To determine

The equation.

  $55=h^2$

Answer to Problem 10.2.17EP

The solutions of the equation $55=h^2$ is $-7.4\text{or}7.4$

Explanation of Solution

Given:

  $55=h^2$

Concept Used:

By the definition of square root,

if $x^2=y$ then $x=\pm \sqrt{y}$

From the definition of square root,

  $\begin{array}{l}55=h^2\\ \pm \sqrt{55}=h\\ \approx \pm 7.4=h\end{array}$

Conclusion:

Hence, the result is $-7.4or7.4$ .