3=-5v^2+8v

Solution for 3=-5v^2+8v equation:

Simplifying
3 = -5v2 + 8v

Reorder the terms:
3 = 8v + -5v2

Solving
3 = 8v + -5v2

Solving for variable 'v'.

Reorder the terms:
3 + -8v + 5v2 = 8v + -8v + -5v2 + 5v2

Combine like terms: 8v + -8v = 0
3 + -8v + 5v2 = 0 + -5v2 + 5v2
3 + -8v + 5v2 = -5v2 + 5v2

Combine like terms: -5v2 + 5v2 = 0
3 + -8v + 5v2 = 0

Factor a trinomial.
(3 + -5v)(1 + -1v) = 0

Subproblem 1
Set the factor '(3 + -5v)' equal to zero and attempt to solve:

Simplifying
3 + -5v = 0

Solving
3 + -5v = 0

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

Add '-3' to each side of the equation.
3 + -3 + -5v = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -5v = 0 + -3
-5v = 0 + -3

Combine like terms: 0 + -3 = -3
-5v = -3

Divide each side by '-5'.
v = 0.6

Simplifying
v = 0.6
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 = {0.6, 1}