(7v+5)(2v-7)=0

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Solution for (7v+5)(2v-7)=0 equation: 


Simplifying
(7v + 5)(2v + -7) = 0

Reorder the terms:
(5 + 7v)(2v + -7) = 0

Reorder the terms:
(5 + 7v)(-7 + 2v) = 0

Multiply (5 + 7v) * (-7 + 2v)
(5(-7 + 2v) + 7v * (-7 + 2v)) = 0
((-7 * 5 + 2v * 5) + 7v * (-7 + 2v)) = 0
((-35 + 10v) + 7v * (-7 + 2v)) = 0
(-35 + 10v + (-7 * 7v + 2v * 7v)) = 0
(-35 + 10v + (-49v + 14v2)) = 0

Combine like terms: 10v + -49v = -39v
(-35 + -39v + 14v2) = 0

Solving
-35 + -39v + 14v2 = 0

Solving for variable 'v'.

Factor a trinomial.
(-5 + -7v)(7 + -2v) = 0


Subproblem 1
Set the factor '(-5 + -7v)' equal to zero and attempt to solve:

Simplifying
-5 + -7v = 0

Solving
-5 + -7v = 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 + -7v = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -7v = 0 + 5
-7v = 0 + 5

Combine like terms: 0 + 5 = 5
-7v = 5

Divide each side by '-7'.
v = -0.7142857143

Simplifying
v = -0.7142857143

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

Simplifying
7 + -2v = 0

Solving
7 + -2v = 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 + -2v = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -2v = 0 + -7
-2v = 0 + -7

Combine like terms: 0 + -7 = -7
-2v = -7

Divide each side by '-2'.
v = 3.5

Simplifying
v = 3.5
Solution
v = {-0.7142857143, 3.5}

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