3x+5=x^2+8x+11

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Solution for 3x+5=x^2+8x+11 equation:


Simplifying
3x + 5 = x2 + 8x + 11

Reorder the terms:
5 + 3x = x2 + 8x + 11

Reorder the terms:
5 + 3x = 11 + 8x + x2

Solving
5 + 3x = 11 + 8x + x2

Solving for variable 'x'.

Reorder the terms:
5 + -11 + 3x + -8x + -1x2 = 11 + 8x + x2 + -11 + -8x + -1x2

Combine like terms: 5 + -11 = -6
-6 + 3x + -8x + -1x2 = 11 + 8x + x2 + -11 + -8x + -1x2

Combine like terms: 3x + -8x = -5x
-6 + -5x + -1x2 = 11 + 8x + x2 + -11 + -8x + -1x2

Reorder the terms:
-6 + -5x + -1x2 = 11 + -11 + 8x + -8x + x2 + -1x2

Combine like terms: 11 + -11 = 0
-6 + -5x + -1x2 = 0 + 8x + -8x + x2 + -1x2
-6 + -5x + -1x2 = 8x + -8x + x2 + -1x2

Combine like terms: 8x + -8x = 0
-6 + -5x + -1x2 = 0 + x2 + -1x2
-6 + -5x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 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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