x^2+7=15

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Solution for x^2+7=15 equation: 


Simplifying
x2 + 7 = 15

Reorder the terms:
7 + x2 = 15

Solving
7 + x2 = 15

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + x2 = 15 + -7

Combine like terms: 7 + -7 = 0
0 + x2 = 15 + -7
x2 = 15 + -7

Combine like terms: 15 + -7 = 8
x2 = 8

Simplifying
x2 = 8

Take the square root of each side:
x = {-2.828427125, 2.828427125}

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