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

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


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

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

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

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

Combine like terms: -2x + 7x = 5x
(-14 + 5x + x2) = x + -2

Reorder the terms:
-14 + 5x + x2 = -2 + x

Solving
-14 + 5x + x2 = -2 + x

Solving for variable 'x'.

Reorder the terms:
-14 + 2 + 5x + -1x + x2 = -2 + x + 2 + -1x

Combine like terms: -14 + 2 = -12
-12 + 5x + -1x + x2 = -2 + x + 2 + -1x

Combine like terms: 5x + -1x = 4x
-12 + 4x + x2 = -2 + x + 2 + -1x

Reorder the terms:
-12 + 4x + x2 = -2 + 2 + x + -1x

Combine like terms: -2 + 2 = 0
-12 + 4x + x2 = 0 + x + -1x
-12 + 4x + x2 = x + -1x

Combine like terms: x + -1x = 0
-12 + 4x + x2 = 0

Factor a trinomial.
(-6 + -1x)(2 + -1x) = 0

Subproblem 1

Set the factor '(-6 + -1x)' equal to zero and attempt to solve: Simplifying -6 + -1x = 0 Solving -6 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + -1x = 0 + 6 Combine like terms: -6 + 6 = 0 0 + -1x = 0 + 6 -1x = 0 + 6 Combine like terms: 0 + 6 = 6 -1x = 6 Divide each side by '-1'. x = -6 Simplifying x = -6

Subproblem 2

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

Solution

x = {-6, 2}

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