(x-2)(x+9)=5(x+6)

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Solution for (x-2)(x+9)=5(x+6) equation:


Simplifying
(x + -2)(x + 9) = 5(x + 6)

Reorder the terms:
(-2 + x)(x + 9) = 5(x + 6)

Reorder the terms:
(-2 + x)(9 + x) = 5(x + 6)

Multiply (-2 + x) * (9 + x)
(-2(9 + x) + x(9 + x)) = 5(x + 6)
((9 * -2 + x * -2) + x(9 + x)) = 5(x + 6)
((-18 + -2x) + x(9 + x)) = 5(x + 6)
(-18 + -2x + (9 * x + x * x)) = 5(x + 6)
(-18 + -2x + (9x + x2)) = 5(x + 6)

Combine like terms: -2x + 9x = 7x
(-18 + 7x + x2) = 5(x + 6)

Reorder the terms:
-18 + 7x + x2 = 5(6 + x)
-18 + 7x + x2 = (6 * 5 + x * 5)
-18 + 7x + x2 = (30 + 5x)

Solving
-18 + 7x + x2 = 30 + 5x

Solving for variable 'x'.

Reorder the terms:
-18 + -30 + 7x + -5x + x2 = 30 + 5x + -30 + -5x

Combine like terms: -18 + -30 = -48
-48 + 7x + -5x + x2 = 30 + 5x + -30 + -5x

Combine like terms: 7x + -5x = 2x
-48 + 2x + x2 = 30 + 5x + -30 + -5x

Reorder the terms:
-48 + 2x + x2 = 30 + -30 + 5x + -5x

Combine like terms: 30 + -30 = 0
-48 + 2x + x2 = 0 + 5x + -5x
-48 + 2x + x2 = 5x + -5x

Combine like terms: 5x + -5x = 0
-48 + 2x + x2 = 0

Factor a trinomial.
(-8 + -1x)(6 + -1x) = 0

Subproblem 1

Set the factor '(-8 + -1x)' equal to zero and attempt to solve: Simplifying -8 + -1x = 0 Solving -8 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -1x = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -1x = 0 + 8 -1x = 0 + 8 Combine like terms: 0 + 8 = 8 -1x = 8 Divide each side by '-1'. x = -8 Simplifying x = -8

Subproblem 2

Set the factor '(6 + -1x)' equal to zero and attempt to solve: Simplifying 6 + -1x = 0 Solving 6 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -1x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -1x = 0 + -6 -1x = 0 + -6 Combine like terms: 0 + -6 = -6 -1x = -6 Divide each side by '-1'. x = 6 Simplifying x = 6

Solution

x = {-8, 6}

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