4x^2-8=316

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Solution for 4x^2-8=316 equation: 


Simplifying
4x2 + -8 = 316

Reorder the terms:
-8 + 4x2 = 316

Solving
-8 + 4x2 = 316

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 + 4x2 = 316 + 8

Combine like terms: -8 + 8 = 0
0 + 4x2 = 316 + 8
4x2 = 316 + 8

Combine like terms: 316 + 8 = 324
4x2 = 324

Divide each side by '4'.
x2 = 81

Simplifying
x2 = 81

Take the square root of each side:
x = {-9, 9}

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