4x(x-5)=(2x+1)(x-5)

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Solution for 4x(x-5)=(2x+1)(x-5) equation:


Simplifying
4x(x + -5) = (2x + 1)(x + -5)

Reorder the terms:
4x(-5 + x) = (2x + 1)(x + -5)
(-5 * 4x + x * 4x) = (2x + 1)(x + -5)
(-20x + 4x2) = (2x + 1)(x + -5)

Reorder the terms:
-20x + 4x2 = (1 + 2x)(x + -5)

Reorder the terms:
-20x + 4x2 = (1 + 2x)(-5 + x)

Multiply (1 + 2x) * (-5 + x)
-20x + 4x2 = (1(-5 + x) + 2x * (-5 + x))
-20x + 4x2 = ((-5 * 1 + x * 1) + 2x * (-5 + x))
-20x + 4x2 = ((-5 + 1x) + 2x * (-5 + x))
-20x + 4x2 = (-5 + 1x + (-5 * 2x + x * 2x))
-20x + 4x2 = (-5 + 1x + (-10x + 2x2))

Combine like terms: 1x + -10x = -9x
-20x + 4x2 = (-5 + -9x + 2x2)

Solving
-20x + 4x2 = -5 + -9x + 2x2

Solving for variable 'x'.

Reorder the terms:
5 + -20x + 9x + 4x2 + -2x2 = -5 + -9x + 2x2 + 5 + 9x + -2x2

Combine like terms: -20x + 9x = -11x
5 + -11x + 4x2 + -2x2 = -5 + -9x + 2x2 + 5 + 9x + -2x2

Combine like terms: 4x2 + -2x2 = 2x2
5 + -11x + 2x2 = -5 + -9x + 2x2 + 5 + 9x + -2x2

Reorder the terms:
5 + -11x + 2x2 = -5 + 5 + -9x + 9x + 2x2 + -2x2

Combine like terms: -5 + 5 = 0
5 + -11x + 2x2 = 0 + -9x + 9x + 2x2 + -2x2
5 + -11x + 2x2 = -9x + 9x + 2x2 + -2x2

Combine like terms: -9x + 9x = 0
5 + -11x + 2x2 = 0 + 2x2 + -2x2
5 + -11x + 2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
5 + -11x + 2x2 = 0

Factor a trinomial.
(1 + -2x)(5 + -1x) = 0

Subproblem 1

Set the factor '(1 + -2x)' equal to zero and attempt to solve: Simplifying 1 + -2x = 0 Solving 1 + -2x = 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 + -2x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -2x = 0 + -1 -2x = 0 + -1 Combine like terms: 0 + -1 = -1 -2x = -1 Divide each side by '-2'. x = 0.5 Simplifying x = 0.5

Subproblem 2

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

Solution

x = {0.5, 5}

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