2x^2-12=128

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Solution for 2x^2-12=128 equation: 


Simplifying
2x2 + -12 = 128

Reorder the terms:
-12 + 2x2 = 128

Solving
-12 + 2x2 = 128

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 2x2 = 128 + 12

Combine like terms: -12 + 12 = 0
0 + 2x2 = 128 + 12
2x2 = 128 + 12

Combine like terms: 128 + 12 = 140
2x2 = 140

Divide each side by '2'.
x2 = 70

Simplifying
x2 = 70

Take the square root of each side:
x = {-8.366600265, 8.366600265}

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