x^2-15=13

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Solution for x^2-15=13 equation: 


Simplifying
x2 + -15 = 13

Reorder the terms:
-15 + x2 = 13

Solving
-15 + x2 = 13

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 = 13 + 15

Combine like terms: -15 + 15 = 0
0 + x2 = 13 + 15
x2 = 13 + 15

Combine like terms: 13 + 15 = 28
x2 = 28

Simplifying
x2 = 28

Take the square root of each side:
x = {-5.291502622, 5.291502622}

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