(4x-5)(3x+8)=

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Solution for (4x-5)(3x+8)= equation: 


Simplifying
(4x + -5)(3x + 8) = 0

Reorder the terms:
(-5 + 4x)(3x + 8) = 0

Reorder the terms:
(-5 + 4x)(8 + 3x) = 0

Multiply (-5 + 4x) * (8 + 3x)
(-5(8 + 3x) + 4x * (8 + 3x)) = 0
((8 * -5 + 3x * -5) + 4x * (8 + 3x)) = 0
((-40 + -15x) + 4x * (8 + 3x)) = 0
(-40 + -15x + (8 * 4x + 3x * 4x)) = 0
(-40 + -15x + (32x + 12x2)) = 0

Combine like terms: -15x + 32x = 17x
(-40 + 17x + 12x2) = 0

Solving
-40 + 17x + 12x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-8 + -3x)(5 + -4x) = 0


Subproblem 1
Set the factor '(-8 + -3x)' equal to zero and attempt to solve:

Simplifying
-8 + -3x = 0

Solving
-8 + -3x = 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 + -3x = 0 + 8

Combine like terms: -8 + 8 = 0
0 + -3x = 0 + 8
-3x = 0 + 8

Combine like terms: 0 + 8 = 8
-3x = 8

Divide each side by '-3'.
x = -2.666666667

Simplifying
x = -2.666666667

Subproblem 2
Set the factor '(5 + -4x)' equal to zero and attempt to solve:

Simplifying
5 + -4x = 0

Solving
5 + -4x = 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 + -4x = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -4x = 0 + -5
-4x = 0 + -5

Combine like terms: 0 + -5 = -5
-4x = -5

Divide each side by '-4'.
x = 1.25

Simplifying
x = 1.25
Solution
x = {-2.666666667, 1.25}

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