x^2-5=7

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Solution for x^2-5=7 equation: 


Simplifying
x2 + -5 = 7

Reorder the terms:
-5 + x2 = 7

Solving
-5 + x2 = 7

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 = 7 + 5

Combine like terms: -5 + 5 = 0
0 + x2 = 7 + 5
x2 = 7 + 5

Combine like terms: 7 + 5 = 12
x2 = 12

Simplifying
x2 = 12

Take the square root of each side:
x = {-3.464101615, 3.464101615}

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