(5-v)(4v+9)=0

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Solution for (5-v)(4v+9)=0 equation:


Simplifying
(5 + -1v)(4v + 9) = 0

Reorder the terms:
(5 + -1v)(9 + 4v) = 0

Multiply (5 + -1v) * (9 + 4v)
(5(9 + 4v) + -1v * (9 + 4v)) = 0
((9 * 5 + 4v * 5) + -1v * (9 + 4v)) = 0
((45 + 20v) + -1v * (9 + 4v)) = 0
(45 + 20v + (9 * -1v + 4v * -1v)) = 0
(45 + 20v + (-9v + -4v2)) = 0

Combine like terms: 20v + -9v = 11v
(45 + 11v + -4v2) = 0

Solving
45 + 11v + -4v2 = 0

Solving for variable 'v'.

Factor a trinomial.
(5 + -1v)(9 + 4v) = 0

Subproblem 1

Set the factor '(5 + -1v)' equal to zero and attempt to solve: Simplifying 5 + -1v = 0 Solving 5 + -1v = 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 + -1v = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1v = 0 + -5 -1v = 0 + -5 Combine like terms: 0 + -5 = -5 -1v = -5 Divide each side by '-1'. v = 5 Simplifying v = 5

Subproblem 2

Set the factor '(9 + 4v)' equal to zero and attempt to solve: Simplifying 9 + 4v = 0 Solving 9 + 4v = 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 + 4v = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 4v = 0 + -9 4v = 0 + -9 Combine like terms: 0 + -9 = -9 4v = -9 Divide each side by '4'. v = -2.25 Simplifying v = -2.25

Solution

v = {5, -2.25}

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