(7-x)(-4-x)=2-4x

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Solution for (7-x)(-4-x)=2-4x equation:


Simplifying
(7 + -1x)(-4 + -1x) = 2 + -4x

Multiply (7 + -1x) * (-4 + -1x)
(7(-4 + -1x) + -1x * (-4 + -1x)) = 2 + -4x
((-4 * 7 + -1x * 7) + -1x * (-4 + -1x)) = 2 + -4x
((-28 + -7x) + -1x * (-4 + -1x)) = 2 + -4x
(-28 + -7x + (-4 * -1x + -1x * -1x)) = 2 + -4x
(-28 + -7x + (4x + 1x2)) = 2 + -4x

Combine like terms: -7x + 4x = -3x
(-28 + -3x + 1x2) = 2 + -4x

Solving
-28 + -3x + 1x2 = 2 + -4x

Solving for variable 'x'.

Reorder the terms:
-28 + -2 + -3x + 4x + 1x2 = 2 + -4x + -2 + 4x

Combine like terms: -28 + -2 = -30
-30 + -3x + 4x + 1x2 = 2 + -4x + -2 + 4x

Combine like terms: -3x + 4x = 1x
-30 + 1x + 1x2 = 2 + -4x + -2 + 4x

Reorder the terms:
-30 + 1x + 1x2 = 2 + -2 + -4x + 4x

Combine like terms: 2 + -2 = 0
-30 + 1x + 1x2 = 0 + -4x + 4x
-30 + 1x + 1x2 = -4x + 4x

Combine like terms: -4x + 4x = 0
-30 + 1x + 1x2 = 0

Factor a trinomial.
(-6 + -1x)(5 + -1x) = 0

Subproblem 1

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

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 = {-6, 5}

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