9a^2-64=0

Solution for 9a^2-64=0 equation:

Simplifying
9a2 + -64 = 0

Reorder the terms:
-64 + 9a2 = 0

Solving
-64 + 9a2 = 0

Solving for variable 'a'.

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

Add '64' to each side of the equation.
-64 + 64 + 9a2 = 0 + 64

Combine like terms: -64 + 64 = 0
0 + 9a2 = 0 + 64
9a2 = 0 + 64

Combine like terms: 0 + 64 = 64
9a2 = 64

Divide each side by '9'.
a2 = 7.111111111

Simplifying
a2 = 7.111111111

Take the square root of each side:
a = {-2.666666667, 2.666666667}