### Home > A2C > Chapter 7 > Lesson 7.2.4 > Problem 7-142

7-142.

In this situation, 9 is the output. Write and solve the equation.

What do you do to both sides of the equation to 'undo' the square root?

7-142.

In this situation, 9 is the output. Write and solve the equation.

What do you do to both sides of the equation to 'undo' the square root?