x^2-5=15

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Solution for x^2-5=15 equation: 


Simplifying
x2 + -5 = 15

Reorder the terms:
-5 + x2 = 15

Solving
-5 + x2 = 15

Solving for variable 'x'.

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

Add '5' to each side of the equation.
-5 + 5 + x2 = 15 + 5

Combine like terms: -5 + 5 = 0
0 + x2 = 15 + 5
x2 = 15 + 5

Combine like terms: 15 + 5 = 20
x2 = 20

Simplifying
x2 = 20

Take the square root of each side:
x = {-4.472135955, 4.472135955}

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