(3x+5)(4x-2)(3)=0

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Solution for (3x+5)(4x-2)(3)=0 equation: 


Simplifying
(3x + 5)(4x + -2)(3) = 0

Reorder the terms:
(5 + 3x)(4x + -2)(3) = 0

Reorder the terms:
(5 + 3x)(-2 + 4x)(3) = 0

Reorder the terms for easier multiplication:
3(5 + 3x)(-2 + 4x) = 0

Multiply (5 + 3x) * (-2 + 4x)
3(5(-2 + 4x) + 3x * (-2 + 4x)) = 0
3((-2 * 5 + 4x * 5) + 3x * (-2 + 4x)) = 0
3((-10 + 20x) + 3x * (-2 + 4x)) = 0
3(-10 + 20x + (-2 * 3x + 4x * 3x)) = 0
3(-10 + 20x + (-6x + 12x2)) = 0

Combine like terms: 20x + -6x = 14x
3(-10 + 14x + 12x2) = 0
(-10 * 3 + 14x * 3 + 12x2 * 3) = 0
(-30 + 42x + 36x2) = 0

Solving
-30 + 42x + 36x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '6'.
6(-5 + 7x + 6x2) = 0

Factor a trinomial.
6((-5 + -3x)(1 + -2x)) = 0

Ignore the factor 6.

Subproblem 1
Set the factor '(-5 + -3x)' equal to zero and attempt to solve:

Simplifying
-5 + -3x = 0

Solving
-5 + -3x = 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 + -3x = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -3x = 0 + 5
-3x = 0 + 5

Combine like terms: 0 + 5 = 5
-3x = 5

Divide each side by '-3'.
x = -1.666666667

Simplifying
x = -1.666666667

Subproblem 2
Set the factor '(1 + -2x)' equal to zero and attempt to solve:

Simplifying
1 + -2x = 0

Solving
1 + -2x = 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 + -2x = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -2x = 0 + -1
-2x = 0 + -1

Combine like terms: 0 + -1 = -1
-2x = -1

Divide each side by '-2'.
x = 0.5

Simplifying
x = 0.5
Solution
x = {-1.666666667, 0.5}

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