-15v^2+13v+20=0

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Solution for -15v^2+13v+20=0 equation:


Simplifying
-15v2 + 13v + 20 = 0

Reorder the terms:
20 + 13v + -15v2 = 0

Solving
20 + 13v + -15v2 = 0

Solving for variable 'v'.

Factor a trinomial.
(5 + -3v)(4 + 5v) = 0

Subproblem 1

Set the factor '(5 + -3v)' equal to zero and attempt to solve: Simplifying 5 + -3v = 0 Solving 5 + -3v = 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 + -3v = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -3v = 0 + -5 -3v = 0 + -5 Combine like terms: 0 + -5 = -5 -3v = -5 Divide each side by '-3'. v = 1.666666667 Simplifying v = 1.666666667

Subproblem 2

Set the factor '(4 + 5v)' equal to zero and attempt to solve: Simplifying 4 + 5v = 0 Solving 4 + 5v = 0 Move all terms containing v to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 5v = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 5v = 0 + -4 5v = 0 + -4 Combine like terms: 0 + -4 = -4 5v = -4 Divide each side by '5'. v = -0.8 Simplifying v = -0.8

Solution

v = {1.666666667, -0.8}

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