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

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


Simplifying
-1x2 + -3x = 2x + 6

Reorder the terms:
-3x + -1x2 = 2x + 6

Reorder the terms:
-3x + -1x2 = 6 + 2x

Solving
-3x + -1x2 = 6 + 2x

Solving for variable 'x'.

Reorder the terms:
-6 + -3x + -2x + -1x2 = 6 + 2x + -6 + -2x

Combine like terms: -3x + -2x = -5x
-6 + -5x + -1x2 = 6 + 2x + -6 + -2x

Reorder the terms:
-6 + -5x + -1x2 = 6 + -6 + 2x + -2x

Combine like terms: 6 + -6 = 0
-6 + -5x + -1x2 = 0 + 2x + -2x
-6 + -5x + -1x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
-6 + -5x + -1x2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(6 + 5x + x2) = 0

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

Ignore the factor -1.

Subproblem 1

Set the factor '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3

Subproblem 2

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

Solution

x = {-3, -2}

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