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

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Solution for (x+4)(3x+8)=0 equation: 


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

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

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

Multiply (4 + x) * (8 + 3x)
(4(8 + 3x) + x(8 + 3x)) = 0
((8 * 4 + 3x * 4) + x(8 + 3x)) = 0
((32 + 12x) + x(8 + 3x)) = 0
(32 + 12x + (8 * x + 3x * x)) = 0
(32 + 12x + (8x + 3x2)) = 0

Combine like terms: 12x + 8x = 20x
(32 + 20x + 3x2) = 0

Solving
32 + 20x + 3x2 = 0

Solving for variable 'x'.

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


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

Simplifying
4 + x = 0

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

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

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

Simplifying
x = -4

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 = {-4, -2.666666667}

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