(1-v)(5v+9)=0

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Solution for (1-v)(5v+9)=0 equation: 


Simplifying
(1 + -1v)(5v + 9) = 0

Reorder the terms:
(1 + -1v)(9 + 5v) = 0

Multiply (1 + -1v) * (9 + 5v)
(1(9 + 5v) + -1v * (9 + 5v)) = 0
((9 * 1 + 5v * 1) + -1v * (9 + 5v)) = 0
((9 + 5v) + -1v * (9 + 5v)) = 0
(9 + 5v + (9 * -1v + 5v * -1v)) = 0
(9 + 5v + (-9v + -5v2)) = 0

Combine like terms: 5v + -9v = -4v
(9 + -4v + -5v2) = 0

Solving
9 + -4v + -5v2 = 0

Solving for variable 'v'.

Factor a trinomial.
(1 + -1v)(9 + 5v) = 0


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

Simplifying
1 + -1v = 0

Solving
1 + -1v = 0

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

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

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

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

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

Simplifying
v = 1

Subproblem 2
Set the factor '(9 + 5v)' equal to zero and attempt to solve:

Simplifying
9 + 5v = 0

Solving
9 + 5v = 0

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

Add '-9' to each side of the equation.
9 + -9 + 5v = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 5v = 0 + -9
5v = 0 + -9

Combine like terms: 0 + -9 = -9
5v = -9

Divide each side by '5'.
v = -1.8

Simplifying
v = -1.8
Solution
v = {1, -1.8}

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