(x+5)(3x-4)=(x+1)(x+5)

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Solution for (x+5)(3x-4)=(x+1)(x+5) equation:


Simplifying
(x + 5)(3x + -4) = (x + 1)(x + 5)

Reorder the terms:
(5 + x)(3x + -4) = (x + 1)(x + 5)

Reorder the terms:
(5 + x)(-4 + 3x) = (x + 1)(x + 5)

Multiply (5 + x) * (-4 + 3x)
(5(-4 + 3x) + x(-4 + 3x)) = (x + 1)(x + 5)
((-4 * 5 + 3x * 5) + x(-4 + 3x)) = (x + 1)(x + 5)
((-20 + 15x) + x(-4 + 3x)) = (x + 1)(x + 5)
(-20 + 15x + (-4 * x + 3x * x)) = (x + 1)(x + 5)
(-20 + 15x + (-4x + 3x2)) = (x + 1)(x + 5)

Combine like terms: 15x + -4x = 11x
(-20 + 11x + 3x2) = (x + 1)(x + 5)

Reorder the terms:
-20 + 11x + 3x2 = (1 + x)(x + 5)

Reorder the terms:
-20 + 11x + 3x2 = (1 + x)(5 + x)

Multiply (1 + x) * (5 + x)
-20 + 11x + 3x2 = (1(5 + x) + x(5 + x))
-20 + 11x + 3x2 = ((5 * 1 + x * 1) + x(5 + x))
-20 + 11x + 3x2 = ((5 + 1x) + x(5 + x))
-20 + 11x + 3x2 = (5 + 1x + (5 * x + x * x))
-20 + 11x + 3x2 = (5 + 1x + (5x + x2))

Combine like terms: 1x + 5x = 6x
-20 + 11x + 3x2 = (5 + 6x + x2)

Solving
-20 + 11x + 3x2 = 5 + 6x + x2

Solving for variable 'x'.

Reorder the terms:
-20 + -5 + 11x + -6x + 3x2 + -1x2 = 5 + 6x + x2 + -5 + -6x + -1x2

Combine like terms: -20 + -5 = -25
-25 + 11x + -6x + 3x2 + -1x2 = 5 + 6x + x2 + -5 + -6x + -1x2

Combine like terms: 11x + -6x = 5x
-25 + 5x + 3x2 + -1x2 = 5 + 6x + x2 + -5 + -6x + -1x2

Combine like terms: 3x2 + -1x2 = 2x2
-25 + 5x + 2x2 = 5 + 6x + x2 + -5 + -6x + -1x2

Reorder the terms:
-25 + 5x + 2x2 = 5 + -5 + 6x + -6x + x2 + -1x2

Combine like terms: 5 + -5 = 0
-25 + 5x + 2x2 = 0 + 6x + -6x + x2 + -1x2
-25 + 5x + 2x2 = 6x + -6x + x2 + -1x2

Combine like terms: 6x + -6x = 0
-25 + 5x + 2x2 = 0 + x2 + -1x2
-25 + 5x + 2x2 = x2 + -1x2

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

Factor a trinomial.
(-5 + -1x)(5 + -2x) = 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 '(5 + -2x)' equal to zero and attempt to solve: Simplifying 5 + -2x = 0 Solving 5 + -2x = 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 + -2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2x = 0 + -5 -2x = 0 + -5 Combine like terms: 0 + -5 = -5 -2x = -5 Divide each side by '-2'. x = 2.5 Simplifying x = 2.5

Solution

x = {-5, 2.5}

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