(9x-8)(9x+8)=

Solution for (9x-8)(9x+8)= equation:

Simplifying
(9x + -8)(9x + 8) = 0

Reorder the terms:
(-8 + 9x)(9x + 8) = 0

Reorder the terms:
(-8 + 9x)(8 + 9x) = 0

Multiply (-8 + 9x) * (8 + 9x)
(-8(8 + 9x) + 9x * (8 + 9x)) = 0
((8 * -8 + 9x * -8) + 9x * (8 + 9x)) = 0
((-64 + -72x) + 9x * (8 + 9x)) = 0
(-64 + -72x + (8 * 9x + 9x * 9x)) = 0
(-64 + -72x + (72x + 81x2)) = 0

Combine like terms: -72x + 72x = 0
(-64 + 0 + 81x2) = 0
(-64 + 81x2) = 0

Solving
-64 + 81x2 = 0

Solving for variable 'x'.

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

Add '64' to each side of the equation.
-64 + 64 + 81x2 = 0 + 64

Combine like terms: -64 + 64 = 0
0 + 81x2 = 0 + 64
81x2 = 0 + 64

Combine like terms: 0 + 64 = 64
81x2 = 64

Divide each side by '81'.
x2 = 0.7901234568

Simplifying
x2 = 0.7901234568

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