(7x+4)(x+8)=0

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Solution for (7x+4)(x+8)=0 equation: 


Simplifying
(7x + 4)(x + 8) = 0

Reorder the terms:
(4 + 7x)(x + 8) = 0

Reorder the terms:
(4 + 7x)(8 + x) = 0

Multiply (4 + 7x) * (8 + x)
(4(8 + x) + 7x * (8 + x)) = 0
((8 * 4 + x * 4) + 7x * (8 + x)) = 0
((32 + 4x) + 7x * (8 + x)) = 0
(32 + 4x + (8 * 7x + x * 7x)) = 0
(32 + 4x + (56x + 7x2)) = 0

Combine like terms: 4x + 56x = 60x
(32 + 60x + 7x2) = 0

Solving
32 + 60x + 7x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(8 + x)(4 + 7x) = 0


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

Simplifying
8 + x = 0

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

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

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

Simplifying
x = -8

Subproblem 2
Set the factor '(4 + 7x)' equal to zero and attempt to solve:

Simplifying
4 + 7x = 0

Solving
4 + 7x = 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 + 7x = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 7x = 0 + -4
7x = 0 + -4

Combine like terms: 0 + -4 = -4
7x = -4

Divide each side by '7'.
x = -0.5714285714

Simplifying
x = -0.5714285714
Solution
x = {-8, -0.5714285714}

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