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

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


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

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

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

Multiply (5 + x) * (-3 + x)
(5(-3 + x) + x(-3 + x)) = (2x + 1)(x + -3)
((-3 * 5 + x * 5) + x(-3 + x)) = (2x + 1)(x + -3)
((-15 + 5x) + x(-3 + x)) = (2x + 1)(x + -3)
(-15 + 5x + (-3 * x + x * x)) = (2x + 1)(x + -3)
(-15 + 5x + (-3x + x2)) = (2x + 1)(x + -3)

Combine like terms: 5x + -3x = 2x
(-15 + 2x + x2) = (2x + 1)(x + -3)

Reorder the terms:
-15 + 2x + x2 = (1 + 2x)(x + -3)

Reorder the terms:
-15 + 2x + x2 = (1 + 2x)(-3 + x)

Multiply (1 + 2x) * (-3 + x)
-15 + 2x + x2 = (1(-3 + x) + 2x * (-3 + x))
-15 + 2x + x2 = ((-3 * 1 + x * 1) + 2x * (-3 + x))
-15 + 2x + x2 = ((-3 + 1x) + 2x * (-3 + x))
-15 + 2x + x2 = (-3 + 1x + (-3 * 2x + x * 2x))
-15 + 2x + x2 = (-3 + 1x + (-6x + 2x2))

Combine like terms: 1x + -6x = -5x
-15 + 2x + x2 = (-3 + -5x + 2x2)

Solving
-15 + 2x + x2 = -3 + -5x + 2x2

Solving for variable 'x'.

Reorder the terms:
-15 + 3 + 2x + 5x + x2 + -2x2 = -3 + -5x + 2x2 + 3 + 5x + -2x2

Combine like terms: -15 + 3 = -12
-12 + 2x + 5x + x2 + -2x2 = -3 + -5x + 2x2 + 3 + 5x + -2x2

Combine like terms: 2x + 5x = 7x
-12 + 7x + x2 + -2x2 = -3 + -5x + 2x2 + 3 + 5x + -2x2

Combine like terms: x2 + -2x2 = -1x2
-12 + 7x + -1x2 = -3 + -5x + 2x2 + 3 + 5x + -2x2

Reorder the terms:
-12 + 7x + -1x2 = -3 + 3 + -5x + 5x + 2x2 + -2x2

Combine like terms: -3 + 3 = 0
-12 + 7x + -1x2 = 0 + -5x + 5x + 2x2 + -2x2
-12 + 7x + -1x2 = -5x + 5x + 2x2 + -2x2

Combine like terms: -5x + 5x = 0
-12 + 7x + -1x2 = 0 + 2x2 + -2x2
-12 + 7x + -1x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
-12 + 7x + -1x2 = 0

Factor a trinomial.
(-4 + x)(3 + -1x) = 0

Subproblem 1

Set the factor '(-4 + x)' equal to zero and attempt to solve: Simplifying -4 + x = 0 Solving -4 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + x = 0 + 4 x = 0 + 4 Combine like terms: 0 + 4 = 4 x = 4 Simplifying x = 4

Subproblem 2

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

Solution

x = {4, 3}

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