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

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Solution for (4x+5)(3x-8)=0 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.
(-5 + -4x)(8 + -3x) = 0


Subproblem 1
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

Subproblem 2
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
Solution
x = {-1.25, 2.666666667}

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