6V^2-17V-15=0

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Solution for 6V^2-17V-15=0 equation:


Simplifying
6V2 + -17V + -15 = 0

Reorder the terms:
-15 + -17V + 6V2 = 0

Solving
-15 + -17V + 6V2 = 0

Solving for variable 'V'.

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

Divide each side by '6'.
-2.5 + -2.833333333V + V2 = 0

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + -2.833333333V + 2.5 + V2 = 0 + 2.5

Reorder the terms:
-2.5 + 2.5 + -2.833333333V + V2 = 0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + -2.833333333V + V2 = 0 + 2.5
-2.833333333V + V2 = 0 + 2.5

Combine like terms: 0 + 2.5 = 2.5
-2.833333333V + V2 = 2.5

The V term is -2.833333333V.  Take half its coefficient (-1.416666667).
Square it (2.006944445) and add it to both sides.

Add '2.006944445' to each side of the equation.
-2.833333333V + 2.006944445 + V2 = 2.5 + 2.006944445

Reorder the terms:
2.006944445 + -2.833333333V + V2 = 2.5 + 2.006944445

Combine like terms: 2.5 + 2.006944445 = 4.506944445
2.006944445 + -2.833333333V + V2 = 4.506944445

Factor a perfect square on the left side:
(V + -1.416666667)(V + -1.416666667) = 4.506944445

Calculate the square root of the right side: 2.122956534

Break this problem into two subproblems by setting 
(V + -1.416666667) equal to 2.122956534 and -2.122956534.

Subproblem 1

V + -1.416666667 = 2.122956534 Simplifying V + -1.416666667 = 2.122956534 Reorder the terms: -1.416666667 + V = 2.122956534 Solving -1.416666667 + V = 2.122956534 Solving for variable 'V'. Move all terms containing V to the left, all other terms to the right. Add '1.416666667' to each side of the equation. -1.416666667 + 1.416666667 + V = 2.122956534 + 1.416666667 Combine like terms: -1.416666667 + 1.416666667 = 0.000000000 0.000000000 + V = 2.122956534 + 1.416666667 V = 2.122956534 + 1.416666667 Combine like terms: 2.122956534 + 1.416666667 = 3.539623201 V = 3.539623201 Simplifying V = 3.539623201

Subproblem 2

V + -1.416666667 = -2.122956534 Simplifying V + -1.416666667 = -2.122956534 Reorder the terms: -1.416666667 + V = -2.122956534 Solving -1.416666667 + V = -2.122956534 Solving for variable 'V'. Move all terms containing V to the left, all other terms to the right. Add '1.416666667' to each side of the equation. -1.416666667 + 1.416666667 + V = -2.122956534 + 1.416666667 Combine like terms: -1.416666667 + 1.416666667 = 0.000000000 0.000000000 + V = -2.122956534 + 1.416666667 V = -2.122956534 + 1.416666667 Combine like terms: -2.122956534 + 1.416666667 = -0.706289867 V = -0.706289867 Simplifying V = -0.706289867

Solution

The solution to the problem is based on the solutions from the subproblems. V = {3.539623201, -0.706289867}

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