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Simplifying
3x2 + 9 = 27
Reorder the terms:
9 + 3x2 = 27
Solving
9 + 3x2 = 27
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-9' to each side of the equation.
9 + -9 + 3x2 = 27 + -9
Combine like terms: 9 + -9 = 0
0 + 3x2 = 27 + -9
3x2 = 27 + -9
Combine like terms: 27 + -9 = 18
3x2 = 18
Divide each side by '3'.
x2 = 6
Simplifying
x2 = 6
Take the square root of each side:
x = {-2.449489743, 2.449489743}
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