12=3x^2-9x+18

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Solution for 12=3x^2-9x+18 equation:


Simplifying
12 = 3x2 + -9x + 18

Reorder the terms:
12 = 18 + -9x + 3x2

Solving
12 = 18 + -9x + 3x2

Solving for variable 'x'.

Combine like terms: 12 + -18 = -6
-6 + 9x + -3x2 = 18 + -9x + 3x2 + -18 + 9x + -3x2

Reorder the terms:
-6 + 9x + -3x2 = 18 + -18 + -9x + 9x + 3x2 + -3x2

Combine like terms: 18 + -18 = 0
-6 + 9x + -3x2 = 0 + -9x + 9x + 3x2 + -3x2
-6 + 9x + -3x2 = -9x + 9x + 3x2 + -3x2

Combine like terms: -9x + 9x = 0
-6 + 9x + -3x2 = 0 + 3x2 + -3x2
-6 + 9x + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
-6 + 9x + -3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-2 + 3x + -1x2) = 0

Factor a trinomial.
3((-2 + x)(1 + -1x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-2 + x)' equal to zero and attempt to solve: Simplifying -2 + x = 0 Solving -2 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + x = 0 + 2 x = 0 + 2 Combine like terms: 0 + 2 = 2 x = 2 Simplifying x = 2

Subproblem 2

Set the factor '(1 + -1x)' equal to zero and attempt to solve: Simplifying 1 + -1x = 0 Solving 1 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -1x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1x = 0 + -1 -1x = 0 + -1 Combine like terms: 0 + -1 = -1 -1x = -1 Divide each side by '-1'. x = 1 Simplifying x = 1

Solution

x = {2, 1}

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