4v^2+13v-3=0

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Solution for 4v^2+13v-3=0 equation:


Simplifying
4v2 + 13v + -3 = 0

Reorder the terms:
-3 + 13v + 4v2 = 0

Solving
-3 + 13v + 4v2 = 0

Solving for variable 'v'.

Begin completing the square.  Divide all terms by
4 the coefficient of the squared term: 

Divide each side by '4'.
-0.75 + 3.25v + v2 = 0

Move the constant term to the right:

Add '0.75' to each side of the equation.
-0.75 + 3.25v + 0.75 + v2 = 0 + 0.75

Reorder the terms:
-0.75 + 0.75 + 3.25v + v2 = 0 + 0.75

Combine like terms: -0.75 + 0.75 = 0.00
0.00 + 3.25v + v2 = 0 + 0.75
3.25v + v2 = 0 + 0.75

Combine like terms: 0 + 0.75 = 0.75
3.25v + v2 = 0.75

The v term is 3.25v.  Take half its coefficient (1.625).
Square it (2.640625) and add it to both sides.

Add '2.640625' to each side of the equation.
3.25v + 2.640625 + v2 = 0.75 + 2.640625

Reorder the terms:
2.640625 + 3.25v + v2 = 0.75 + 2.640625

Combine like terms: 0.75 + 2.640625 = 3.390625
2.640625 + 3.25v + v2 = 3.390625

Factor a perfect square on the left side:
(v + 1.625)(v + 1.625) = 3.390625

Calculate the square root of the right side: 1.841364983

Break this problem into two subproblems by setting 
(v + 1.625) equal to 1.841364983 and -1.841364983.

Subproblem 1

v + 1.625 = 1.841364983 Simplifying v + 1.625 = 1.841364983 Reorder the terms: 1.625 + v = 1.841364983 Solving 1.625 + v = 1.841364983 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-1.625' to each side of the equation. 1.625 + -1.625 + v = 1.841364983 + -1.625 Combine like terms: 1.625 + -1.625 = 0.000 0.000 + v = 1.841364983 + -1.625 v = 1.841364983 + -1.625 Combine like terms: 1.841364983 + -1.625 = 0.216364983 v = 0.216364983 Simplifying v = 0.216364983

Subproblem 2

v + 1.625 = -1.841364983 Simplifying v + 1.625 = -1.841364983 Reorder the terms: 1.625 + v = -1.841364983 Solving 1.625 + v = -1.841364983 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-1.625' to each side of the equation. 1.625 + -1.625 + v = -1.841364983 + -1.625 Combine like terms: 1.625 + -1.625 = 0.000 0.000 + v = -1.841364983 + -1.625 v = -1.841364983 + -1.625 Combine like terms: -1.841364983 + -1.625 = -3.466364983 v = -3.466364983 Simplifying v = -3.466364983

Solution

The solution to the problem is based on the solutions from the subproblems. v = {0.216364983, -3.466364983}

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