-4v^2+v=20-5v^2

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Solution for -4v^2+v=20-5v^2 equation:


Simplifying
-4v2 + v = 20 + -5v2

Reorder the terms:
v + -4v2 = 20 + -5v2

Solving
v + -4v2 = 20 + -5v2

Solving for variable 'v'.

Reorder the terms:
-20 + v + -4v2 + 5v2 = 20 + -5v2 + -20 + 5v2

Combine like terms: -4v2 + 5v2 = 1v2
-20 + v + 1v2 = 20 + -5v2 + -20 + 5v2

Reorder the terms:
-20 + v + 1v2 = 20 + -20 + -5v2 + 5v2

Combine like terms: 20 + -20 = 0
-20 + v + 1v2 = 0 + -5v2 + 5v2
-20 + v + 1v2 = -5v2 + 5v2

Combine like terms: -5v2 + 5v2 = 0
-20 + v + 1v2 = 0

Factor a trinomial.
(-5 + -1v)(4 + -1v) = 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 '(4 + -1v)' equal to zero and attempt to solve: Simplifying 4 + -1v = 0 Solving 4 + -1v = 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 + -1v = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1v = 0 + -4 -1v = 0 + -4 Combine like terms: 0 + -4 = -4 -1v = -4 Divide each side by '-1'. v = 4 Simplifying v = 4

Solution

v = {-5, 4}

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