3x^2-8=100

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Solution for 3x^2-8=100 equation: 


Simplifying
3x2 + -8 = 100

Reorder the terms:
-8 + 3x2 = 100

Solving
-8 + 3x2 = 100

Solving for variable 'x'.

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

Add '8' to each side of the equation.
-8 + 8 + 3x2 = 100 + 8

Combine like terms: -8 + 8 = 0
0 + 3x2 = 100 + 8
3x2 = 100 + 8

Combine like terms: 100 + 8 = 108
3x2 = 108

Divide each side by '3'.
x2 = 36

Simplifying
x2 = 36

Take the square root of each side:
x = {-6, 6}

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