X^2+16=81

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Solution for X^2+16=81 equation: 


Simplifying
X2 + 16 = 81

Reorder the terms:
16 + X2 = 81

Solving
16 + X2 = 81

Solving for variable 'X'.

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

Add '-16' to each side of the equation.
16 + -16 + X2 = 81 + -16

Combine like terms: 16 + -16 = 0
0 + X2 = 81 + -16
X2 = 81 + -16

Combine like terms: 81 + -16 = 65
X2 = 65

Simplifying
X2 = 65

Take the square root of each side:
X = {-8.062257748, 8.062257748}

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