9v^2-13v+3=0

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Solution for 9v^2-13v+3=0 equation:


Simplifying
9v2 + -13v + 3 = 0

Reorder the terms:
3 + -13v + 9v2 = 0

Solving
3 + -13v + 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'.
0.3333333333 + -1.444444444v + v2 = 0

Move the constant term to the right:

Add '-0.3333333333' to each side of the equation.
0.3333333333 + -1.444444444v + -0.3333333333 + v2 = 0 + -0.3333333333

Reorder the terms:
0.3333333333 + -0.3333333333 + -1.444444444v + v2 = 0 + -0.3333333333

Combine like terms: 0.3333333333 + -0.3333333333 = 0.0000000000
0.0000000000 + -1.444444444v + v2 = 0 + -0.3333333333
-1.444444444v + v2 = 0 + -0.3333333333

Combine like terms: 0 + -0.3333333333 = -0.3333333333
-1.444444444v + v2 = -0.3333333333

The v term is -1.444444444v.  Take half its coefficient (-0.722222222).
Square it (0.5216049380) and add it to both sides.

Add '0.5216049380' to each side of the equation.
-1.444444444v + 0.5216049380 + v2 = -0.3333333333 + 0.5216049380

Reorder the terms:
0.5216049380 + -1.444444444v + v2 = -0.3333333333 + 0.5216049380

Combine like terms: -0.3333333333 + 0.5216049380 = 0.1882716047
0.5216049380 + -1.444444444v + v2 = 0.1882716047

Factor a perfect square on the left side:
(v + -0.722222222)(v + -0.722222222) = 0.1882716047

Calculate the square root of the right side: 0.433902759

Break this problem into two subproblems by setting 
(v + -0.722222222) equal to 0.433902759 and -0.433902759.

Subproblem 1

v + -0.722222222 = 0.433902759 Simplifying v + -0.722222222 = 0.433902759 Reorder the terms: -0.722222222 + v = 0.433902759 Solving -0.722222222 + v = 0.433902759 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '0.722222222' to each side of the equation. -0.722222222 + 0.722222222 + v = 0.433902759 + 0.722222222 Combine like terms: -0.722222222 + 0.722222222 = 0.000000000 0.000000000 + v = 0.433902759 + 0.722222222 v = 0.433902759 + 0.722222222 Combine like terms: 0.433902759 + 0.722222222 = 1.156124981 v = 1.156124981 Simplifying v = 1.156124981

Subproblem 2

v + -0.722222222 = -0.433902759 Simplifying v + -0.722222222 = -0.433902759 Reorder the terms: -0.722222222 + v = -0.433902759 Solving -0.722222222 + v = -0.433902759 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '0.722222222' to each side of the equation. -0.722222222 + 0.722222222 + v = -0.433902759 + 0.722222222 Combine like terms: -0.722222222 + 0.722222222 = 0.000000000 0.000000000 + v = -0.433902759 + 0.722222222 v = -0.433902759 + 0.722222222 Combine like terms: -0.433902759 + 0.722222222 = 0.288319463 v = 0.288319463 Simplifying v = 0.288319463

Solution

The solution to the problem is based on the solutions from the subproblems. v = {1.156124981, 0.288319463}

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