Question

solve ( w^2 = 81 ), where ( w ) is a real number. simplify your answer as much as possible. if there is more than one solution, separate them with commas. if there is no solution, click on
o solution\. ( w = )

Explanation:

Step1: Take square root of both sides

$w = \pm\sqrt{81}$

Step2: Simplify the square root

$\sqrt{81} = 9$, so $w = \pm9$

Answer:

$w = 9, -9$