x^2+15=31

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Solution for x^2+15=31 equation: 


Simplifying
x2 + 15 = 31

Reorder the terms:
15 + x2 = 31

Solving
15 + x2 = 31

Solving for variable 'x'.

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

Add '-15' to each side of the equation.
15 + -15 + x2 = 31 + -15

Combine like terms: 15 + -15 = 0
0 + x2 = 31 + -15
x2 = 31 + -15

Combine like terms: 31 + -15 = 16
x2 = 16

Simplifying
x2 = 16

Take the square root of each side:
x = {-4, 4}

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