Question

Which of the following are possible values for x in the equation x^2=90? Choose the TWO correct answers. Options: 30, -9√10, -3√10, 45, √90

Answer 1

Answer: x=3√10 or x=−3√10

Explanation:

Let's solve your equation step-by-step.

x2=90

Step 1: Take square root.

x=±√90

x=3√10 or x=−3√10