9v^2-4v-5=0

Solution for 9v^2-4v-5=0 equation:

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

Reorder the terms:
-5 + -4v + 9v2 = 0

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

Solving for variable 'v'.

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

Subproblem 1
Set the factor '(-5 + -9v)' equal to zero and attempt to solve:

Simplifying
-5 + -9v = 0

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

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

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

Divide each side by '-9'.
v = -0.5555555556

Simplifying
v = -0.5555555556
Subproblem 2
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
Solution
v = {-0.5555555556, 1}