9=w^2

Solution for 9=w^2 equation:

Simplifying
9 = w2

Solving
9 = w2

Solving for variable 'w'.

Move all terms containing w to the left, all other terms to the right.

Add '-1w2' to each side of the equation.
9 + -1w2 = w2 + -1w2

Combine like terms: w2 + -1w2 = 0
9 + -1w2 = 0

Add '-9' to each side of the equation.
9 + -9 + -1w2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -1w2 = 0 + -9
-1w2 = 0 + -9

Combine like terms: 0 + -9 = -9
-1w2 = -9

Divide each side by '-1'.
w2 = 9

Simplifying
w2 = 9

Take the square root of each side:
w = {-3, 3}