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

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


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

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

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

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

Combine like terms: 3x + -20x = -17x
(-12 + -17x + 5x2) = 0

Solving
-12 + -17x + 5x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-3 + -5x)(4 + -1x) = 0


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

Simplifying
-3 + -5x = 0

Solving
-3 + -5x = 0

Move all terms containing x to the left, all other terms to the right.

Add '3' to each side of the equation.
-3 + 3 + -5x = 0 + 3

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

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

Divide each side by '-5'.
x = -0.6

Simplifying
x = -0.6

Subproblem 2
Set the factor '(4 + -1x)' equal to zero and attempt to solve:

Simplifying
4 + -1x = 0

Solving
4 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-4' to each side of the equation.
4 + -4 + -1x = 0 + -4

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

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

Divide each side by '-1'.
x = 4

Simplifying
x = 4
Solution
x = {-0.6, 4}

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