-3x^2+6x+9=9

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Solution for -3x^2+6x+9=9 equation:


Simplifying
-3x2 + 6x + 9 = 9

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

Add '-9' to each side of the equation.
9 + 6x + -9 + -3x2 = 9 + -9

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

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

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

Solving
6x + -3x2 = 0

Solving for variable 'x'.

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

Ignore the factor 3.

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 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 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {0, 2}

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