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

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


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

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

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

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

Combine like terms: -8x + 14x = 6x
(-56 + 6x + 2x2) = 0

Solving
-56 + 6x + 2x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-28 + 3x + x2) = 0

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

Ignore the factor 2.

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

Simplifying
-7 + -1x = 0

Solving
-7 + -1x = 0

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

Add '7' to each side of the equation.
-7 + 7 + -1x = 0 + 7

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

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

Divide each side by '-1'.
x = -7

Simplifying
x = -7

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 = {-7, 4}

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