2v^2-21v=-40

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Solution for 2v^2-21v=-40 equation:


Simplifying
2v2 + -21v = -40

Reorder the terms:
-21v + 2v2 = -40

Solving
-21v + 2v2 = -40

Solving for variable 'v'.

Reorder the terms:
40 + -21v + 2v2 = -40 + 40

Combine like terms: -40 + 40 = 0
40 + -21v + 2v2 = 0

Factor a trinomial.
(5 + -2v)(8 + -1v) = 0

Subproblem 1

Set the factor '(5 + -2v)' equal to zero and attempt to solve: Simplifying 5 + -2v = 0 Solving 5 + -2v = 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 + -2v = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2v = 0 + -5 -2v = 0 + -5 Combine like terms: 0 + -5 = -5 -2v = -5 Divide each side by '-2'. v = 2.5 Simplifying v = 2.5

Subproblem 2

Set the factor '(8 + -1v)' equal to zero and attempt to solve: Simplifying 8 + -1v = 0 Solving 8 + -1v = 0 Move all terms containing v to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1v = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1v = 0 + -8 -1v = 0 + -8 Combine like terms: 0 + -8 = -8 -1v = -8 Divide each side by '-1'. v = 8 Simplifying v = 8

Solution

v = {2.5, 8}

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