x^2-8=5

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Solution for x^2-8=5 equation:


Simplifying
x2 + -8 = 5

Reorder the terms:
-8 + x2 = 5

Solving
-8 + x2 = 5

Solving for variable 'x'.

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

Add '8' to each side of the equation.
-8 + 8 + x2 = 5 + 8

Combine like terms: -8 + 8 = 0
0 + x2 = 5 + 8
x2 = 5 + 8

Combine like terms: 5 + 8 = 13
x2 = 13

Simplifying
x2 = 13

Take the square root of each side:
x = {-3.605551275, 3.605551275}

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