8x*x-8=57

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Solution for 8x*x-8=57 equation: 


Simplifying
8x * x + -8 = 57

Multiply x * x
8x2 + -8 = 57

Reorder the terms:
-8 + 8x2 = 57

Solving
-8 + 8x2 = 57

Solving for variable 'x'.

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

Add '8' to each side of the equation.
-8 + 8 + 8x2 = 57 + 8

Combine like terms: -8 + 8 = 0
0 + 8x2 = 57 + 8
8x2 = 57 + 8

Combine like terms: 57 + 8 = 65
8x2 = 65

Divide each side by '8'.
x2 = 8.125

Simplifying
x2 = 8.125

Take the square root of each side:
x = {-2.850438563, 2.850438563}

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