90=w^2

Solution for 90=w^2 equation:

Simplifying
90 = w2

Solving
90 = 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.
90 + -1w2 = w2 + -1w2

Combine like terms: w2 + -1w2 = 0
90 + -1w2 = 0

Add '-90' to each side of the equation.
90 + -90 + -1w2 = 0 + -90

Combine like terms: 90 + -90 = 0
0 + -1w2 = 0 + -90
-1w2 = 0 + -90

Combine like terms: 0 + -90 = -90
-1w2 = -90

Divide each side by '-1'.
w2 = 90

Simplifying
w2 = 90

Take the square root of each side:
w = {-9.486832981, 9.486832981}