X^2-31=-8

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Solution for X^2-31=-8 equation: 


Simplifying
X2 + -31 = -8

Reorder the terms:
-31 + X2 = -8

Solving
-31 + X2 = -8

Solving for variable 'X'.

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

Add '31' to each side of the equation.
-31 + 31 + X2 = -8 + 31

Combine like terms: -31 + 31 = 0
0 + X2 = -8 + 31
X2 = -8 + 31

Combine like terms: -8 + 31 = 23
X2 = 23

Simplifying
X2 = 23

Take the square root of each side:
X = {-4.795831523, 4.795831523}

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