(-7x-6)(x-5)+(8x-9)(5-x)=

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Solution for (-7x-6)(x-5)+(8x-9)(5-x)= equation:


Simplifying
(-7x + -6)(x + -5) + (8x + -9)(5 + -1x) = 0

Reorder the terms:
(-6 + -7x)(x + -5) + (8x + -9)(5 + -1x) = 0

Reorder the terms:
(-6 + -7x)(-5 + x) + (8x + -9)(5 + -1x) = 0

Multiply (-6 + -7x) * (-5 + x)
(-6(-5 + x) + -7x * (-5 + x)) + (8x + -9)(5 + -1x) = 0
((-5 * -6 + x * -6) + -7x * (-5 + x)) + (8x + -9)(5 + -1x) = 0
((30 + -6x) + -7x * (-5 + x)) + (8x + -9)(5 + -1x) = 0
(30 + -6x + (-5 * -7x + x * -7x)) + (8x + -9)(5 + -1x) = 0
(30 + -6x + (35x + -7x2)) + (8x + -9)(5 + -1x) = 0

Combine like terms: -6x + 35x = 29x
(30 + 29x + -7x2) + (8x + -9)(5 + -1x) = 0

Reorder the terms:
30 + 29x + -7x2 + (-9 + 8x)(5 + -1x) = 0

Multiply (-9 + 8x) * (5 + -1x)
30 + 29x + -7x2 + (-9(5 + -1x) + 8x * (5 + -1x)) = 0
30 + 29x + -7x2 + ((5 * -9 + -1x * -9) + 8x * (5 + -1x)) = 0
30 + 29x + -7x2 + ((-45 + 9x) + 8x * (5 + -1x)) = 0
30 + 29x + -7x2 + (-45 + 9x + (5 * 8x + -1x * 8x)) = 0
30 + 29x + -7x2 + (-45 + 9x + (40x + -8x2)) = 0

Combine like terms: 9x + 40x = 49x
30 + 29x + -7x2 + (-45 + 49x + -8x2) = 0

Reorder the terms:
30 + -45 + 29x + 49x + -7x2 + -8x2 = 0

Combine like terms: 30 + -45 = -15
-15 + 29x + 49x + -7x2 + -8x2 = 0

Combine like terms: 29x + 49x = 78x
-15 + 78x + -7x2 + -8x2 = 0

Combine like terms: -7x2 + -8x2 = -15x2
-15 + 78x + -15x2 = 0

Solving
-15 + 78x + -15x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(-5 + 26x + -5x2) = 0

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

Ignore the factor 3.

Subproblem 1

Set the factor '(-5 + x)' equal to zero and attempt to solve: Simplifying -5 + x = 0 Solving -5 + x = 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 + x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + x = 0 + 5 x = 0 + 5 Combine like terms: 0 + 5 = 5 x = 5 Simplifying x = 5

Subproblem 2

Set the factor '(1 + -5x)' equal to zero and attempt to solve: Simplifying 1 + -5x = 0 Solving 1 + -5x = 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 + -5x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -5x = 0 + -1 -5x = 0 + -1 Combine like terms: 0 + -1 = -1 -5x = -1 Divide each side by '-5'. x = 0.2 Simplifying x = 0.2

Solution

x = {5, 0.2}

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