64-81w^2=0

Solution for 64-81w^2=0 equation:

Simplifying
64 + -81w2 = 0

Solving
64 + -81w2 = 0

Solving for variable 'w'.

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

Add '-64' to each side of the equation.
64 + -64 + -81w2 = 0 + -64

Combine like terms: 64 + -64 = 0
0 + -81w2 = 0 + -64
-81w2 = 0 + -64

Combine like terms: 0 + -64 = -64
-81w2 = -64

Divide each side by '-81'.
w2 = 0.7901234568

Simplifying
w2 = 0.7901234568

Take the square root of each side:
w = {-0.888888889, 0.888888889}