x^2-57=87

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Solution for x^2-57=87 equation: 


Simplifying
x2 + -57 = 87

Reorder the terms:
-57 + x2 = 87

Solving
-57 + x2 = 87

Solving for variable 'x'.

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

Add '57' to each side of the equation.
-57 + 57 + x2 = 87 + 57

Combine like terms: -57 + 57 = 0
0 + x2 = 87 + 57
x2 = 87 + 57

Combine like terms: 87 + 57 = 144
x2 = 144

Simplifying
x2 = 144

Take the square root of each side:
x = {-12, 12}

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