5v^2-26v=2

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Solution for 5v^2-26v=2 equation:


Simplifying
5v2 + -26v = 2

Reorder the terms:
-26v + 5v2 = 2

Solving
-26v + 5v2 = 2

Solving for variable 'v'.

Reorder the terms:
-2 + -26v + 5v2 = 2 + -2

Combine like terms: 2 + -2 = 0
-2 + -26v + 5v2 = 0

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

Divide each side by '5'.
-0.4 + -5.2v + v2 = 0

Move the constant term to the right:

Add '0.4' to each side of the equation.
-0.4 + -5.2v + 0.4 + v2 = 0 + 0.4

Reorder the terms:
-0.4 + 0.4 + -5.2v + v2 = 0 + 0.4

Combine like terms: -0.4 + 0.4 = 0.0
0.0 + -5.2v + v2 = 0 + 0.4
-5.2v + v2 = 0 + 0.4

Combine like terms: 0 + 0.4 = 0.4
-5.2v + v2 = 0.4

The v term is -5.2v.  Take half its coefficient (-2.6).
Square it (6.76) and add it to both sides.

Add '6.76' to each side of the equation.
-5.2v + 6.76 + v2 = 0.4 + 6.76

Reorder the terms:
6.76 + -5.2v + v2 = 0.4 + 6.76

Combine like terms: 0.4 + 6.76 = 7.16
6.76 + -5.2v + v2 = 7.16

Factor a perfect square on the left side:
(v + -2.6)(v + -2.6) = 7.16

Calculate the square root of the right side: 2.675817632

Break this problem into two subproblems by setting 
(v + -2.6) equal to 2.675817632 and -2.675817632.

Subproblem 1

v + -2.6 = 2.675817632 Simplifying v + -2.6 = 2.675817632 Reorder the terms: -2.6 + v = 2.675817632 Solving -2.6 + v = 2.675817632 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '2.6' to each side of the equation. -2.6 + 2.6 + v = 2.675817632 + 2.6 Combine like terms: -2.6 + 2.6 = 0.0 0.0 + v = 2.675817632 + 2.6 v = 2.675817632 + 2.6 Combine like terms: 2.675817632 + 2.6 = 5.275817632 v = 5.275817632 Simplifying v = 5.275817632

Subproblem 2

v + -2.6 = -2.675817632 Simplifying v + -2.6 = -2.675817632 Reorder the terms: -2.6 + v = -2.675817632 Solving -2.6 + v = -2.675817632 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '2.6' to each side of the equation. -2.6 + 2.6 + v = -2.675817632 + 2.6 Combine like terms: -2.6 + 2.6 = 0.0 0.0 + v = -2.675817632 + 2.6 v = -2.675817632 + 2.6 Combine like terms: -2.675817632 + 2.6 = -0.075817632 v = -0.075817632 Simplifying v = -0.075817632

Solution

The solution to the problem is based on the solutions from the subproblems. v = {5.275817632, -0.075817632}

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