x^2+3=81

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Solution for x^2+3=81 equation: 


Simplifying
x2 + 3 = 81

Reorder the terms:
3 + x2 = 81

Solving
3 + x2 = 81

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + x2 = 81 + -3

Combine like terms: 3 + -3 = 0
0 + x2 = 81 + -3
x2 = 81 + -3

Combine like terms: 81 + -3 = 78
x2 = 78

Simplifying
x2 = 78

Take the square root of each side:
x = {-8.831760866, 8.831760866}

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