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Simplifying
3x2 + -18 = -3
Reorder the terms:
-18 + 3x2 = -3
Solving
-18 + 3x2 = -3
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 = -3 + 18
Combine like terms: -18 + 18 = 0
0 + 3x2 = -3 + 18
3x2 = -3 + 18
Combine like terms: -3 + 18 = 15
3x2 = 15
Divide each side by '3'.
x2 = 5
Simplifying
x2 = 5
Take the square root of each side:
x = {-2.236067978, 2.236067978}
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