x^2+20=84

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Solution for x^2+20=84 equation: 


Simplifying
x2 + 20 = 84

Reorder the terms:
20 + x2 = 84

Solving
20 + x2 = 84

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + x2 = 84 + -20

Combine like terms: 20 + -20 = 0
0 + x2 = 84 + -20
x2 = 84 + -20

Combine like terms: 84 + -20 = 64
x2 = 64

Simplifying
x2 = 64

Take the square root of each side:
x = {-8, 8}

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