(x-4)(x+7)=4(x+11)

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Solution for (x-4)(x+7)=4(x+11) equation:


Simplifying
(x + -4)(x + 7) = 4(x + 11)

Reorder the terms:
(-4 + x)(x + 7) = 4(x + 11)

Reorder the terms:
(-4 + x)(7 + x) = 4(x + 11)

Multiply (-4 + x) * (7 + x)
(-4(7 + x) + x(7 + x)) = 4(x + 11)
((7 * -4 + x * -4) + x(7 + x)) = 4(x + 11)
((-28 + -4x) + x(7 + x)) = 4(x + 11)
(-28 + -4x + (7 * x + x * x)) = 4(x + 11)
(-28 + -4x + (7x + x2)) = 4(x + 11)

Combine like terms: -4x + 7x = 3x
(-28 + 3x + x2) = 4(x + 11)

Reorder the terms:
-28 + 3x + x2 = 4(11 + x)
-28 + 3x + x2 = (11 * 4 + x * 4)
-28 + 3x + x2 = (44 + 4x)

Solving
-28 + 3x + x2 = 44 + 4x

Solving for variable 'x'.

Reorder the terms:
-28 + -44 + 3x + -4x + x2 = 44 + 4x + -44 + -4x

Combine like terms: -28 + -44 = -72
-72 + 3x + -4x + x2 = 44 + 4x + -44 + -4x

Combine like terms: 3x + -4x = -1x
-72 + -1x + x2 = 44 + 4x + -44 + -4x

Reorder the terms:
-72 + -1x + x2 = 44 + -44 + 4x + -4x

Combine like terms: 44 + -44 = 0
-72 + -1x + x2 = 0 + 4x + -4x
-72 + -1x + x2 = 4x + -4x

Combine like terms: 4x + -4x = 0
-72 + -1x + x2 = 0

Factor a trinomial.
(-8 + -1x)(9 + -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 '(9 + -1x)' equal to zero and attempt to solve: Simplifying 9 + -1x = 0 Solving 9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1x = 0 + -9 -1x = 0 + -9 Combine like terms: 0 + -9 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9

Solution

x = {-8, 9}

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