3x^2-12=24

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Solution for 3x^2-12=24 equation: 


Simplifying
3x2 + -12 = 24

Reorder the terms:
-12 + 3x2 = 24

Solving
-12 + 3x2 = 24

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 3x2 = 24 + 12

Combine like terms: -12 + 12 = 0
0 + 3x2 = 24 + 12
3x2 = 24 + 12

Combine like terms: 24 + 12 = 36
3x2 = 36

Divide each side by '3'.
x2 = 12

Simplifying
x2 = 12

Take the square root of each side:
x = {-3.464101615, 3.464101615}

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