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Simplifying
3x2 + 18 = 54
Reorder the terms:
18 + 3x2 = 54
Solving
18 + 3x2 = 54
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-18' to each side of the equation.
18 + -18 + 3x2 = 54 + -18
Combine like terms: 18 + -18 = 0
0 + 3x2 = 54 + -18
3x2 = 54 + -18
Combine like terms: 54 + -18 = 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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