9v^2+3v-17=0

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Solution for 9v^2+3v-17=0 equation:


Simplifying
9v2 + 3v + -17 = 0

Reorder the terms:
-17 + 3v + 9v2 = 0

Solving
-17 + 3v + 9v2 = 0

Solving for variable 'v'.

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

Divide each side by '9'.
-1.888888889 + 0.3333333333v + v2 = 0

Move the constant term to the right:

Add '1.888888889' to each side of the equation.
-1.888888889 + 0.3333333333v + 1.888888889 + v2 = 0 + 1.888888889

Reorder the terms:
-1.888888889 + 1.888888889 + 0.3333333333v + v2 = 0 + 1.888888889

Combine like terms: -1.888888889 + 1.888888889 = 0.000000000
0.000000000 + 0.3333333333v + v2 = 0 + 1.888888889
0.3333333333v + v2 = 0 + 1.888888889

Combine like terms: 0 + 1.888888889 = 1.888888889
0.3333333333v + v2 = 1.888888889

The v term is 0.3333333333v.  Take half its coefficient (0.1666666667).
Square it (0.02777777779) and add it to both sides.

Add '0.02777777779' to each side of the equation.
0.3333333333v + 0.02777777779 + v2 = 1.888888889 + 0.02777777779

Reorder the terms:
0.02777777779 + 0.3333333333v + v2 = 1.888888889 + 0.02777777779

Combine like terms: 1.888888889 + 0.02777777779 = 1.91666666679
0.02777777779 + 0.3333333333v + v2 = 1.91666666679

Factor a perfect square on the left side:
(v + 0.1666666667)(v + 0.1666666667) = 1.91666666679

Calculate the square root of the right side: 1.384437311

Break this problem into two subproblems by setting 
(v + 0.1666666667) equal to 1.384437311 and -1.384437311.

Subproblem 1

v + 0.1666666667 = 1.384437311 Simplifying v + 0.1666666667 = 1.384437311 Reorder the terms: 0.1666666667 + v = 1.384437311 Solving 0.1666666667 + v = 1.384437311 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-0.1666666667' to each side of the equation. 0.1666666667 + -0.1666666667 + v = 1.384437311 + -0.1666666667 Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000 0.0000000000 + v = 1.384437311 + -0.1666666667 v = 1.384437311 + -0.1666666667 Combine like terms: 1.384437311 + -0.1666666667 = 1.2177706443 v = 1.2177706443 Simplifying v = 1.2177706443

Subproblem 2

v + 0.1666666667 = -1.384437311 Simplifying v + 0.1666666667 = -1.384437311 Reorder the terms: 0.1666666667 + v = -1.384437311 Solving 0.1666666667 + v = -1.384437311 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-0.1666666667' to each side of the equation. 0.1666666667 + -0.1666666667 + v = -1.384437311 + -0.1666666667 Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000 0.0000000000 + v = -1.384437311 + -0.1666666667 v = -1.384437311 + -0.1666666667 Combine like terms: -1.384437311 + -0.1666666667 = -1.5511039777 v = -1.5511039777 Simplifying v = -1.5511039777

Solution

The solution to the problem is based on the solutions from the subproblems. v = {1.2177706443, -1.5511039777}

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