x^2+4=84

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Solution for x^2+4=84 equation: 


Simplifying
x2 + 4 = 84

Reorder the terms:
4 + x2 = 84

Solving
4 + x2 = 84

Solving for variable 'x'.

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

Add '-4' to each side of the equation.
4 + -4 + x2 = 84 + -4

Combine like terms: 4 + -4 = 0
0 + x2 = 84 + -4
x2 = 84 + -4

Combine like terms: 84 + -4 = 80
x2 = 80

Simplifying
x2 = 80

Take the square root of each side:
x = {-8.94427191, 8.94427191}

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