(2x-8)(7x+1)=0

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Solution for (2x-8)(7x+1)=0 equation: 


Simplifying
(2x + -8)(7x + 1) = 0

Reorder the terms:
(-8 + 2x)(7x + 1) = 0

Reorder the terms:
(-8 + 2x)(1 + 7x) = 0

Multiply (-8 + 2x) * (1 + 7x)
(-8(1 + 7x) + 2x * (1 + 7x)) = 0
((1 * -8 + 7x * -8) + 2x * (1 + 7x)) = 0
((-8 + -56x) + 2x * (1 + 7x)) = 0
(-8 + -56x + (1 * 2x + 7x * 2x)) = 0
(-8 + -56x + (2x + 14x2)) = 0

Combine like terms: -56x + 2x = -54x
(-8 + -54x + 14x2) = 0

Solving
-8 + -54x + 14x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-4 + -27x + 7x2) = 0

Factor a trinomial.
2((-1 + -7x)(4 + -1x)) = 0

Ignore the factor 2.

Subproblem 1
Set the factor '(-1 + -7x)' equal to zero and attempt to solve:

Simplifying
-1 + -7x = 0

Solving
-1 + -7x = 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 + -7x = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -7x = 0 + 1
-7x = 0 + 1

Combine like terms: 0 + 1 = 1
-7x = 1

Divide each side by '-7'.
x = -0.1428571429

Simplifying
x = -0.1428571429

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 = {-0.1428571429, 4}

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