x^2-7=57

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Solution for x^2-7=57 equation: 


Simplifying
x2 + -7 = 57

Reorder the terms:
-7 + x2 = 57

Solving
-7 + x2 = 57

Solving for variable 'x'.

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

Add '7' to each side of the equation.
-7 + 7 + x2 = 57 + 7

Combine like terms: -7 + 7 = 0
0 + x2 = 57 + 7
x2 = 57 + 7

Combine like terms: 57 + 7 = 64
x2 = 64

Simplifying
x2 = 64

Take the square root of each side:
x = {-8, 8}

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