(v+5)(v-7)=0

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Solution for (v+5)(v-7)=0 equation: 


Simplifying
(v + 5)(v + -7) = 0

Reorder the terms:
(5 + v)(v + -7) = 0

Reorder the terms:
(5 + v)(-7 + v) = 0

Multiply (5 + v) * (-7 + v)
(5(-7 + v) + v(-7 + v)) = 0
((-7 * 5 + v * 5) + v(-7 + v)) = 0
((-35 + 5v) + v(-7 + v)) = 0
(-35 + 5v + (-7 * v + v * v)) = 0
(-35 + 5v + (-7v + v2)) = 0

Combine like terms: 5v + -7v = -2v
(-35 + -2v + v2) = 0

Solving
-35 + -2v + v2 = 0

Solving for variable 'v'.

Factor a trinomial.
(-5 + -1v)(7 + -1v) = 0


Subproblem 1
Set the factor '(-5 + -1v)' equal to zero and attempt to solve:

Simplifying
-5 + -1v = 0

Solving
-5 + -1v = 0

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

Add '5' to each side of the equation.
-5 + 5 + -1v = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -1v = 0 + 5
-1v = 0 + 5

Combine like terms: 0 + 5 = 5
-1v = 5

Divide each side by '-1'.
v = -5

Simplifying
v = -5

Subproblem 2
Set the factor '(7 + -1v)' equal to zero and attempt to solve:

Simplifying
7 + -1v = 0

Solving
7 + -1v = 0

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

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

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

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

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

Simplifying
v = 7
Solution
v = {-5, 7}

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