(4x+5)(x-1)=20x

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Solution for (4x+5)(x-1)=20x equation:


Simplifying
(4x + 5)(x + -1) = 20x

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

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

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

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

Solving
-5 + 1x + 4x2 = 20x

Solving for variable 'x'.

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

Combine like terms: 1x + -20x = -19x
-5 + -19x + 4x2 = 20x + -20x

Combine like terms: 20x + -20x = 0
-5 + -19x + 4x2 = 0

Factor a trinomial.
(-1 + -4x)(5 + -1x) = 0

Subproblem 1

Set the factor '(-1 + -4x)' equal to zero and attempt to solve: Simplifying -1 + -4x = 0 Solving -1 + -4x = 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 + -4x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -4x = 0 + 1 -4x = 0 + 1 Combine like terms: 0 + 1 = 1 -4x = 1 Divide each side by '-4'. x = -0.25 Simplifying x = -0.25

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 = {-0.25, 5}

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