4x^2-8b^2-8b^2=0

Solution for 4x^2-8b^2-8b^2=0 equation:

Simplifying
4x2 + -8b2 + -8b2 = 0

Reorder the terms:
-8b2 + -8b2 + 4x2 = 0

Combine like terms: -8b2 + -8b2 = -16b2
-16b2 + 4x2 = 0

Solving
-16b2 + 4x2 = 0

Solving for variable 'b'.

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

Add '-4x2' to each side of the equation.
-16b2 + 4x2 + -4x2 = 0 + -4x2

Combine like terms: 4x2 + -4x2 = 0
-16b2 + 0 = 0 + -4x2
-16b2 = 0 + -4x2
Remove the zero:
-16b2 = -4x2

Divide each side by '-16'.
b2 = 0.25x2

Simplifying
b2 = 0.25x2

Take the square root of each side:
b = {-0.5x, 0.5x}