(x+2)(x-5)=(2x+5)(x-5)

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


Simplifying
(x + 2)(x + -5) = (2x + 5)(x + -5)

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

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

Multiply (2 + x) * (-5 + x)
(2(-5 + x) + x(-5 + x)) = (2x + 5)(x + -5)
((-5 * 2 + x * 2) + x(-5 + x)) = (2x + 5)(x + -5)
((-10 + 2x) + x(-5 + x)) = (2x + 5)(x + -5)
(-10 + 2x + (-5 * x + x * x)) = (2x + 5)(x + -5)
(-10 + 2x + (-5x + x2)) = (2x + 5)(x + -5)

Combine like terms: 2x + -5x = -3x
(-10 + -3x + x2) = (2x + 5)(x + -5)

Reorder the terms:
-10 + -3x + x2 = (5 + 2x)(x + -5)

Reorder the terms:
-10 + -3x + x2 = (5 + 2x)(-5 + x)

Multiply (5 + 2x) * (-5 + x)
-10 + -3x + x2 = (5(-5 + x) + 2x * (-5 + x))
-10 + -3x + x2 = ((-5 * 5 + x * 5) + 2x * (-5 + x))
-10 + -3x + x2 = ((-25 + 5x) + 2x * (-5 + x))
-10 + -3x + x2 = (-25 + 5x + (-5 * 2x + x * 2x))
-10 + -3x + x2 = (-25 + 5x + (-10x + 2x2))

Combine like terms: 5x + -10x = -5x
-10 + -3x + x2 = (-25 + -5x + 2x2)

Solving
-10 + -3x + x2 = -25 + -5x + 2x2

Solving for variable 'x'.

Reorder the terms:
-10 + 25 + -3x + 5x + x2 + -2x2 = -25 + -5x + 2x2 + 25 + 5x + -2x2

Combine like terms: -10 + 25 = 15
15 + -3x + 5x + x2 + -2x2 = -25 + -5x + 2x2 + 25 + 5x + -2x2

Combine like terms: -3x + 5x = 2x
15 + 2x + x2 + -2x2 = -25 + -5x + 2x2 + 25 + 5x + -2x2

Combine like terms: x2 + -2x2 = -1x2
15 + 2x + -1x2 = -25 + -5x + 2x2 + 25 + 5x + -2x2

Reorder the terms:
15 + 2x + -1x2 = -25 + 25 + -5x + 5x + 2x2 + -2x2

Combine like terms: -25 + 25 = 0
15 + 2x + -1x2 = 0 + -5x + 5x + 2x2 + -2x2
15 + 2x + -1x2 = -5x + 5x + 2x2 + -2x2

Combine like terms: -5x + 5x = 0
15 + 2x + -1x2 = 0 + 2x2 + -2x2
15 + 2x + -1x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
15 + 2x + -1x2 = 0

Factor a trinomial.
(5 + -1x)(3 + x) = 0

Subproblem 1

Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

Subproblem 2

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

Solution

x = {5, -3}

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