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 = 88
X2 = 88

Simplifying
X2 = 88

Take the square root of each side:
X = {-9.38083152, 9.38083152}

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