x(x+5)-2(x-4)=12

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Solution for x(x+5)-2(x-4)=12 equation:


Simplifying
x(x + 5) + -2(x + -4) = 12

Reorder the terms:
x(5 + x) + -2(x + -4) = 12
(5 * x + x * x) + -2(x + -4) = 12
(5x + x2) + -2(x + -4) = 12

Reorder the terms:
5x + x2 + -2(-4 + x) = 12
5x + x2 + (-4 * -2 + x * -2) = 12
5x + x2 + (8 + -2x) = 12

Reorder the terms:
8 + 5x + -2x + x2 = 12

Combine like terms: 5x + -2x = 3x
8 + 3x + x2 = 12

Solving
8 + 3x + x2 = 12

Solving for variable 'x'.

Reorder the terms:
8 + -12 + 3x + x2 = 12 + -12

Combine like terms: 8 + -12 = -4
-4 + 3x + x2 = 12 + -12

Combine like terms: 12 + -12 = 0
-4 + 3x + x2 = 0

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

Subproblem 1

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

Subproblem 2

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

Solution

x = {-4, 1}

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