4(x^2-8)=64

Solution for 4(x^2-8)=64 equation:

Simplifying
4(x2 + -8) = 64

Reorder the terms:
4(-8 + x2) = 64
(-8 * 4 + x2 * 4) = 64
(-32 + 4x2) = 64

Solving
-32 + 4x2 = 64

Solving for variable 'x'.

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

Add '32' to each side of the equation.
-32 + 32 + 4x2 = 64 + 32

Combine like terms: -32 + 32 = 0
0 + 4x2 = 64 + 32
4x2 = 64 + 32

Combine like terms: 64 + 32 = 96
4x2 = 96

Divide each side by '4'.
x2 = 24

Simplifying
x2 = 24

Take the square root of each side:
x = {-4.898979486, 4.898979486}