### Home > INT2 > Chapter 5 > Lesson 5.2.5 > Problem5-113

5-113.

What values of $x$ will make the following equations true?

1. $x^2 = 144$

$x = 12$ or $–12$

1. $x=\sqrt { 144 }$

Remember that a square root cannot result in a negative number.

1. $x^2 − 5 = 139$

Add $5$ to both sides. This equation should look familiar now.

1. $x − 1 = \sqrt { 144 }$

$\sqrt{144}=12$

1. $x^2 = -144$

What number squared results in a negative number?

No real solution.

1. $x^2 + 5 = 0$

Subtract $5$ from both sides.