19v^2+6v-5=0

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Solution for 19v^2+6v-5=0 equation:


Simplifying
19v2 + 6v + -5 = 0

Reorder the terms:
-5 + 6v + 19v2 = 0

Solving
-5 + 6v + 19v2 = 0

Solving for variable 'v'.

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

Divide each side by '19'.
-0.2631578947 + 0.3157894737v + v2 = 0

Move the constant term to the right:

Add '0.2631578947' to each side of the equation.
-0.2631578947 + 0.3157894737v + 0.2631578947 + v2 = 0 + 0.2631578947

Reorder the terms:
-0.2631578947 + 0.2631578947 + 0.3157894737v + v2 = 0 + 0.2631578947

Combine like terms: -0.2631578947 + 0.2631578947 = 0.0000000000
0.0000000000 + 0.3157894737v + v2 = 0 + 0.2631578947
0.3157894737v + v2 = 0 + 0.2631578947

Combine like terms: 0 + 0.2631578947 = 0.2631578947
0.3157894737v + v2 = 0.2631578947

The v term is 0.3157894737v.  Take half its coefficient (0.1578947369).
Square it (0.02493074794) and add it to both sides.

Add '0.02493074794' to each side of the equation.
0.3157894737v + 0.02493074794 + v2 = 0.2631578947 + 0.02493074794

Reorder the terms:
0.02493074794 + 0.3157894737v + v2 = 0.2631578947 + 0.02493074794

Combine like terms: 0.2631578947 + 0.02493074794 = 0.28808864264
0.02493074794 + 0.3157894737v + v2 = 0.28808864264

Factor a perfect square on the left side:
(v + 0.1578947369)(v + 0.1578947369) = 0.28808864264

Calculate the square root of the right side: 0.536738896

Break this problem into two subproblems by setting 
(v + 0.1578947369) equal to 0.536738896 and -0.536738896.

Subproblem 1

v + 0.1578947369 = 0.536738896 Simplifying v + 0.1578947369 = 0.536738896 Reorder the terms: 0.1578947369 + v = 0.536738896 Solving 0.1578947369 + v = 0.536738896 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-0.1578947369' to each side of the equation. 0.1578947369 + -0.1578947369 + v = 0.536738896 + -0.1578947369 Combine like terms: 0.1578947369 + -0.1578947369 = 0.0000000000 0.0000000000 + v = 0.536738896 + -0.1578947369 v = 0.536738896 + -0.1578947369 Combine like terms: 0.536738896 + -0.1578947369 = 0.3788441591 v = 0.3788441591 Simplifying v = 0.3788441591

Subproblem 2

v + 0.1578947369 = -0.536738896 Simplifying v + 0.1578947369 = -0.536738896 Reorder the terms: 0.1578947369 + v = -0.536738896 Solving 0.1578947369 + v = -0.536738896 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-0.1578947369' to each side of the equation. 0.1578947369 + -0.1578947369 + v = -0.536738896 + -0.1578947369 Combine like terms: 0.1578947369 + -0.1578947369 = 0.0000000000 0.0000000000 + v = -0.536738896 + -0.1578947369 v = -0.536738896 + -0.1578947369 Combine like terms: -0.536738896 + -0.1578947369 = -0.6946336329 v = -0.6946336329 Simplifying v = -0.6946336329

Solution

The solution to the problem is based on the solutions from the subproblems. v = {0.3788441591, -0.6946336329}

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