(8r-2)(8r+2)=

Solution for (8r-2)(8r+2)= equation:

Simplifying
(8r + -2)(8r + 2) = 0

Reorder the terms:
(-2 + 8r)(8r + 2) = 0

Reorder the terms:
(-2 + 8r)(2 + 8r) = 0

Multiply (-2 + 8r) * (2 + 8r)
(-2(2 + 8r) + 8r * (2 + 8r)) = 0
((2 * -2 + 8r * -2) + 8r * (2 + 8r)) = 0
((-4 + -16r) + 8r * (2 + 8r)) = 0
(-4 + -16r + (2 * 8r + 8r * 8r)) = 0
(-4 + -16r + (16r + 64r2)) = 0

Combine like terms: -16r + 16r = 0
(-4 + 0 + 64r2) = 0
(-4 + 64r2) = 0

Solving
-4 + 64r2 = 0

Solving for variable 'r'.

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

Add '4' to each side of the equation.
-4 + 4 + 64r2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 64r2 = 0 + 4
64r2 = 0 + 4

Combine like terms: 0 + 4 = 4
64r2 = 4

Divide each side by '64'.
r2 = 0.0625

Simplifying
r2 = 0.0625

Take the square root of each side:
r = {-0.25, 0.25}