G^2-21=100

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Solution for G^2-21=100 equation: 


Simplifying
G2 + -21 = 100

Reorder the terms:
-21 + G2 = 100

Solving
-21 + G2 = 100

Solving for variable 'G'.

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

Add '21' to each side of the equation.
-21 + 21 + G2 = 100 + 21

Combine like terms: -21 + 21 = 0
0 + G2 = 100 + 21
G2 = 100 + 21

Combine like terms: 100 + 21 = 121
G2 = 121

Simplifying
G2 = 121

Take the square root of each side:
G = {-11, 11}

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