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

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


Simplifying
9 + -2x = x2 + 6x + 9

Reorder the terms:
9 + -2x = 9 + 6x + x2

Add '-9' to each side of the equation.
9 + -9 + -2x = 9 + 6x + -9 + x2

Combine like terms: 9 + -9 = 0
0 + -2x = 9 + 6x + -9 + x2
-2x = 9 + 6x + -9 + x2

Reorder the terms:
-2x = 9 + -9 + 6x + x2

Combine like terms: 9 + -9 = 0
-2x = 0 + 6x + x2
-2x = 6x + x2

Solving
-2x = 6x + x2

Solving for variable 'x'.

Combine like terms: -2x + -6x = -8x
-8x + -1x2 = 6x + x2 + -6x + -1x2

Reorder the terms:
-8x + -1x2 = 6x + -6x + x2 + -1x2

Combine like terms: 6x + -6x = 0
-8x + -1x2 = 0 + x2 + -1x2
-8x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-8x + -1x2 = 0

Factor out the Greatest Common Factor (GCF), '-1x'.
-1x(8 + x) = 0

Ignore the factor -1.

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 '(8 + x)' equal to zero and attempt to solve: Simplifying 8 + x = 0 Solving 8 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + x = 0 + -8 x = 0 + -8 Combine like terms: 0 + -8 = -8 x = -8 Simplifying x = -8

Solution

x = {0, -8}

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