3x^2-3=72

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Solution for 3x^2-3=72 equation: 


Simplifying
3x2 + -3 = 72

Reorder the terms:
-3 + 3x2 = 72

Solving
-3 + 3x2 = 72

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + 3x2 = 72 + 3

Combine like terms: -3 + 3 = 0
0 + 3x2 = 72 + 3
3x2 = 72 + 3

Combine like terms: 72 + 3 = 75
3x2 = 75

Divide each side by '3'.
x2 = 25

Simplifying
x2 = 25

Take the square root of each side:
x = {-5, 5}

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