4v^2-15=-7v

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Solution for 4v^2-15=-7v equation:


Simplifying
4v2 + -15 = -7v

Reorder the terms:
-15 + 4v2 = -7v

Solving
-15 + 4v2 = -7v

Solving for variable 'v'.

Reorder the terms:
-15 + 7v + 4v2 = -7v + 7v

Combine like terms: -7v + 7v = 0
-15 + 7v + 4v2 = 0

Factor a trinomial.
(-3 + -1v)(5 + -4v) = 0

Subproblem 1

Set the factor '(-3 + -1v)' equal to zero and attempt to solve: Simplifying -3 + -1v = 0 Solving -3 + -1v = 0 Move all terms containing v to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1v = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1v = 0 + 3 -1v = 0 + 3 Combine like terms: 0 + 3 = 3 -1v = 3 Divide each side by '-1'. v = -3 Simplifying v = -3

Subproblem 2

Set the factor '(5 + -4v)' equal to zero and attempt to solve: Simplifying 5 + -4v = 0 Solving 5 + -4v = 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 + -4v = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -4v = 0 + -5 -4v = 0 + -5 Combine like terms: 0 + -5 = -5 -4v = -5 Divide each side by '-4'. v = 1.25 Simplifying v = 1.25

Solution

v = {-3, 1.25}

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