0=-5v^2-8v+4

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Solution for 0=-5v^2-8v+4 equation:


Simplifying
0 = -5v2 + -8v + 4

Reorder the terms:
0 = 4 + -8v + -5v2

Solving
0 = 4 + -8v + -5v2

Solving for variable 'v'.

Combine like terms: 0 + -4 = -4
-4 + 8v + 5v2 = 4 + -8v + -5v2 + -4 + 8v + 5v2

Reorder the terms:
-4 + 8v + 5v2 = 4 + -4 + -8v + 8v + -5v2 + 5v2

Combine like terms: 4 + -4 = 0
-4 + 8v + 5v2 = 0 + -8v + 8v + -5v2 + 5v2
-4 + 8v + 5v2 = -8v + 8v + -5v2 + 5v2

Combine like terms: -8v + 8v = 0
-4 + 8v + 5v2 = 0 + -5v2 + 5v2
-4 + 8v + 5v2 = -5v2 + 5v2

Combine like terms: -5v2 + 5v2 = 0
-4 + 8v + 5v2 = 0

Factor a trinomial.
(-2 + -1v)(2 + -5v) = 0

Subproblem 1

Set the factor '(-2 + -1v)' equal to zero and attempt to solve: Simplifying -2 + -1v = 0 Solving -2 + -1v = 0 Move all terms containing v to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1v = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1v = 0 + 2 -1v = 0 + 2 Combine like terms: 0 + 2 = 2 -1v = 2 Divide each side by '-1'. v = -2 Simplifying v = -2

Subproblem 2

Set the factor '(2 + -5v)' equal to zero and attempt to solve: Simplifying 2 + -5v = 0 Solving 2 + -5v = 0 Move all terms containing v to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -5v = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -5v = 0 + -2 -5v = 0 + -2 Combine like terms: 0 + -2 = -2 -5v = -2 Divide each side by '-5'. v = 0.4 Simplifying v = 0.4

Solution

v = {-2, 0.4}

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