-x^2-2x-1=2x+3

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Solution for -x^2-2x-1=2x+3 equation:


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

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

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

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

Solving for variable 'x'.

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

Combine like terms: -1 + -3 = -4
-4 + -2x + -2x + -1x2 = 3 + 2x + -3 + -2x

Combine like terms: -2x + -2x = -4x
-4 + -4x + -1x2 = 3 + 2x + -3 + -2x

Reorder the terms:
-4 + -4x + -1x2 = 3 + -3 + 2x + -2x

Combine like terms: 3 + -3 = 0
-4 + -4x + -1x2 = 0 + 2x + -2x
-4 + -4x + -1x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
-4 + -4x + -1x2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(4 + 4x + x2) = 0

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

Ignore the factor -1.

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 '(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 = {-2, -2}

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