14v^2-17v=15

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Solution for 14v^2-17v=15 equation:


Simplifying
14v2 + -17v = 15

Reorder the terms:
-17v + 14v2 = 15

Solving
-17v + 14v2 = 15

Solving for variable 'v'.

Reorder the terms:
-15 + -17v + 14v2 = 15 + -15

Combine like terms: 15 + -15 = 0
-15 + -17v + 14v2 = 0

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

Divide each side by '14'.
-1.071428571 + -1.214285714v + v2 = 0

Move the constant term to the right:

Add '1.071428571' to each side of the equation.
-1.071428571 + -1.214285714v + 1.071428571 + v2 = 0 + 1.071428571

Reorder the terms:
-1.071428571 + 1.071428571 + -1.214285714v + v2 = 0 + 1.071428571

Combine like terms: -1.071428571 + 1.071428571 = 0.000000000
0.000000000 + -1.214285714v + v2 = 0 + 1.071428571
-1.214285714v + v2 = 0 + 1.071428571

Combine like terms: 0 + 1.071428571 = 1.071428571
-1.214285714v + v2 = 1.071428571

The v term is -1.214285714v.  Take half its coefficient (-0.607142857).
Square it (0.3686224488) and add it to both sides.

Add '0.3686224488' to each side of the equation.
-1.214285714v + 0.3686224488 + v2 = 1.071428571 + 0.3686224488

Reorder the terms:
0.3686224488 + -1.214285714v + v2 = 1.071428571 + 0.3686224488

Combine like terms: 1.071428571 + 0.3686224488 = 1.4400510198
0.3686224488 + -1.214285714v + v2 = 1.4400510198

Factor a perfect square on the left side:
(v + -0.607142857)(v + -0.607142857) = 1.4400510198

Calculate the square root of the right side: 1.200021258

Break this problem into two subproblems by setting 
(v + -0.607142857) equal to 1.200021258 and -1.200021258.

Subproblem 1

v + -0.607142857 = 1.200021258 Simplifying v + -0.607142857 = 1.200021258 Reorder the terms: -0.607142857 + v = 1.200021258 Solving -0.607142857 + v = 1.200021258 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '0.607142857' to each side of the equation. -0.607142857 + 0.607142857 + v = 1.200021258 + 0.607142857 Combine like terms: -0.607142857 + 0.607142857 = 0.000000000 0.000000000 + v = 1.200021258 + 0.607142857 v = 1.200021258 + 0.607142857 Combine like terms: 1.200021258 + 0.607142857 = 1.807164115 v = 1.807164115 Simplifying v = 1.807164115

Subproblem 2

v + -0.607142857 = -1.200021258 Simplifying v + -0.607142857 = -1.200021258 Reorder the terms: -0.607142857 + v = -1.200021258 Solving -0.607142857 + v = -1.200021258 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '0.607142857' to each side of the equation. -0.607142857 + 0.607142857 + v = -1.200021258 + 0.607142857 Combine like terms: -0.607142857 + 0.607142857 = 0.000000000 0.000000000 + v = -1.200021258 + 0.607142857 v = -1.200021258 + 0.607142857 Combine like terms: -1.200021258 + 0.607142857 = -0.592878401 v = -0.592878401 Simplifying v = -0.592878401

Solution

The solution to the problem is based on the solutions from the subproblems. v = {1.807164115, -0.592878401}

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