(x+6)(x-2)=(2x+7)(x-2)

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Solution for (x+6)(x-2)=(2x+7)(x-2) equation:


Simplifying
(x + 6)(x + -2) = (2x + 7)(x + -2)

Reorder the terms:
(6 + x)(x + -2) = (2x + 7)(x + -2)

Reorder the terms:
(6 + x)(-2 + x) = (2x + 7)(x + -2)

Multiply (6 + x) * (-2 + x)
(6(-2 + x) + x(-2 + x)) = (2x + 7)(x + -2)
((-2 * 6 + x * 6) + x(-2 + x)) = (2x + 7)(x + -2)
((-12 + 6x) + x(-2 + x)) = (2x + 7)(x + -2)
(-12 + 6x + (-2 * x + x * x)) = (2x + 7)(x + -2)
(-12 + 6x + (-2x + x2)) = (2x + 7)(x + -2)

Combine like terms: 6x + -2x = 4x
(-12 + 4x + x2) = (2x + 7)(x + -2)

Reorder the terms:
-12 + 4x + x2 = (7 + 2x)(x + -2)

Reorder the terms:
-12 + 4x + x2 = (7 + 2x)(-2 + x)

Multiply (7 + 2x) * (-2 + x)
-12 + 4x + x2 = (7(-2 + x) + 2x * (-2 + x))
-12 + 4x + x2 = ((-2 * 7 + x * 7) + 2x * (-2 + x))
-12 + 4x + x2 = ((-14 + 7x) + 2x * (-2 + x))
-12 + 4x + x2 = (-14 + 7x + (-2 * 2x + x * 2x))
-12 + 4x + x2 = (-14 + 7x + (-4x + 2x2))

Combine like terms: 7x + -4x = 3x
-12 + 4x + x2 = (-14 + 3x + 2x2)

Solving
-12 + 4x + x2 = -14 + 3x + 2x2

Solving for variable 'x'.

Reorder the terms:
-12 + 14 + 4x + -3x + x2 + -2x2 = -14 + 3x + 2x2 + 14 + -3x + -2x2

Combine like terms: -12 + 14 = 2
2 + 4x + -3x + x2 + -2x2 = -14 + 3x + 2x2 + 14 + -3x + -2x2

Combine like terms: 4x + -3x = 1x
2 + 1x + x2 + -2x2 = -14 + 3x + 2x2 + 14 + -3x + -2x2

Combine like terms: x2 + -2x2 = -1x2
2 + 1x + -1x2 = -14 + 3x + 2x2 + 14 + -3x + -2x2

Reorder the terms:
2 + 1x + -1x2 = -14 + 14 + 3x + -3x + 2x2 + -2x2

Combine like terms: -14 + 14 = 0
2 + 1x + -1x2 = 0 + 3x + -3x + 2x2 + -2x2
2 + 1x + -1x2 = 3x + -3x + 2x2 + -2x2

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

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

Factor a trinomial.
(2 + -1x)(1 + x) = 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 '(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 = {2, -1}

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