(3x+8)(7x-14)=0

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Solution for (3x+8)(7x-14)=0 equation: 


Simplifying
(3x + 8)(7x + -14) = 0

Reorder the terms:
(8 + 3x)(7x + -14) = 0

Reorder the terms:
(8 + 3x)(-14 + 7x) = 0

Multiply (8 + 3x) * (-14 + 7x)
(8(-14 + 7x) + 3x * (-14 + 7x)) = 0
((-14 * 8 + 7x * 8) + 3x * (-14 + 7x)) = 0
((-112 + 56x) + 3x * (-14 + 7x)) = 0
(-112 + 56x + (-14 * 3x + 7x * 3x)) = 0
(-112 + 56x + (-42x + 21x2)) = 0

Combine like terms: 56x + -42x = 14x
(-112 + 14x + 21x2) = 0

Solving
-112 + 14x + 21x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '7'.
7(-16 + 2x + 3x2) = 0

Factor a trinomial.
7((-8 + -3x)(2 + -1x)) = 0

Ignore the factor 7.

Subproblem 1
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

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

Simplifying
2 + -1x = 0

Solving
2 + -1x = 0

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

Add '-2' to each side of the equation.
2 + -2 + -1x = 0 + -2

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

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

Divide each side by '-1'.
x = 2

Simplifying
x = 2
Solution
x = {-2.666666667, 2}

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