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

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


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

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

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

Reorder the terms for easier multiplication:
-1x + x2 + -1 * 1(-5 + x) = 20

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

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

Combine like terms: -1x + -1x = -2x
5 + -2x + x2 = 20

Solving
5 + -2x + x2 = 20

Solving for variable 'x'.

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

Combine like terms: 5 + -20 = -15
-15 + -2x + x2 = 20 + -20

Combine like terms: 20 + -20 = 0
-15 + -2x + x2 = 0

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

Subproblem 1

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

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 = {-3, 5}

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