x^2+2x-1=3x+5

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Solution for x^2+2x-1=3x+5 equation:


Simplifying
x2 + 2x + -1 = 3x + 5

Reorder the terms:
-1 + 2x + x2 = 3x + 5

Reorder the terms:
-1 + 2x + x2 = 5 + 3x

Solving
-1 + 2x + x2 = 5 + 3x

Solving for variable 'x'.

Reorder the terms:
-1 + -5 + 2x + -3x + x2 = 5 + 3x + -5 + -3x

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

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

Reorder the terms:
-6 + -1x + x2 = 5 + -5 + 3x + -3x

Combine like terms: 5 + -5 = 0
-6 + -1x + x2 = 0 + 3x + -3x
-6 + -1x + x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
-6 + -1x + x2 = 0

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

Subproblem 1

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

Subproblem 2

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 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 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {-2, 3}

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