5x+7=(3x+2)(x-1)

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Solution for 5x+7=(3x+2)(x-1) equation:


Simplifying
5x + 7 = (3x + 2)(x + -1)

Reorder the terms:
7 + 5x = (3x + 2)(x + -1)

Reorder the terms:
7 + 5x = (2 + 3x)(x + -1)

Reorder the terms:
7 + 5x = (2 + 3x)(-1 + x)

Multiply (2 + 3x) * (-1 + x)
7 + 5x = (2(-1 + x) + 3x * (-1 + x))
7 + 5x = ((-1 * 2 + x * 2) + 3x * (-1 + x))
7 + 5x = ((-2 + 2x) + 3x * (-1 + x))
7 + 5x = (-2 + 2x + (-1 * 3x + x * 3x))
7 + 5x = (-2 + 2x + (-3x + 3x2))

Combine like terms: 2x + -3x = -1x
7 + 5x = (-2 + -1x + 3x2)

Solving
7 + 5x = -2 + -1x + 3x2

Solving for variable 'x'.

Reorder the terms:
7 + 2 + 5x + x + -3x2 = -2 + -1x + 3x2 + 2 + x + -3x2

Combine like terms: 7 + 2 = 9
9 + 5x + x + -3x2 = -2 + -1x + 3x2 + 2 + x + -3x2

Combine like terms: 5x + x = 6x
9 + 6x + -3x2 = -2 + -1x + 3x2 + 2 + x + -3x2

Reorder the terms:
9 + 6x + -3x2 = -2 + 2 + -1x + x + 3x2 + -3x2

Combine like terms: -2 + 2 = 0
9 + 6x + -3x2 = 0 + -1x + x + 3x2 + -3x2
9 + 6x + -3x2 = -1x + x + 3x2 + -3x2

Combine like terms: -1x + x = 0
9 + 6x + -3x2 = 0 + 3x2 + -3x2
9 + 6x + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
9 + 6x + -3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(3 + 2x + -1x2) = 0

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

Ignore the factor 3.

Subproblem 1

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

Subproblem 2

Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1

Solution

x = {3, -1}

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