25-16v*2=12v(v+5)

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Solution for 25-16v*2=12v(v+5) equation:


Simplifying
25 + -16v * 2 = 12v(v + 5)

Reorder the terms for easier multiplication:
25 + -16 * 2v = 12v(v + 5)

Multiply -16 * 2
25 + -32v = 12v(v + 5)

Reorder the terms:
25 + -32v = 12v(5 + v)
25 + -32v = (5 * 12v + v * 12v)
25 + -32v = (60v + 12v2)

Solving
25 + -32v = 60v + 12v2

Solving for variable 'v'.

Combine like terms: -32v + -60v = -92v
25 + -92v + -12v2 = 60v + 12v2 + -60v + -12v2

Reorder the terms:
25 + -92v + -12v2 = 60v + -60v + 12v2 + -12v2

Combine like terms: 60v + -60v = 0
25 + -92v + -12v2 = 0 + 12v2 + -12v2
25 + -92v + -12v2 = 12v2 + -12v2

Combine like terms: 12v2 + -12v2 = 0
25 + -92v + -12v2 = 0

Begin completing the square.  Divide all terms by
-12 the coefficient of the squared term: 

Divide each side by '-12'.
-2.083333333 + 7.666666667v + v2 = 0

Move the constant term to the right:

Add '2.083333333' to each side of the equation.
-2.083333333 + 7.666666667v + 2.083333333 + v2 = 0 + 2.083333333

Reorder the terms:
-2.083333333 + 2.083333333 + 7.666666667v + v2 = 0 + 2.083333333

Combine like terms: -2.083333333 + 2.083333333 = 0.000000000
0.000000000 + 7.666666667v + v2 = 0 + 2.083333333
7.666666667v + v2 = 0 + 2.083333333

Combine like terms: 0 + 2.083333333 = 2.083333333
7.666666667v + v2 = 2.083333333

The v term is 7.666666667v.  Take half its coefficient (3.833333334).
Square it (14.69444445) and add it to both sides.

Add '14.69444445' to each side of the equation.
7.666666667v + 14.69444445 + v2 = 2.083333333 + 14.69444445

Reorder the terms:
14.69444445 + 7.666666667v + v2 = 2.083333333 + 14.69444445

Combine like terms: 2.083333333 + 14.69444445 = 16.777777783
14.69444445 + 7.666666667v + v2 = 16.777777783

Factor a perfect square on the left side:
(v + 3.833333334)(v + 3.833333334) = 16.777777783

Calculate the square root of the right side: 4.096068576

Break this problem into two subproblems by setting 
(v + 3.833333334) equal to 4.096068576 and -4.096068576.

Subproblem 1

v + 3.833333334 = 4.096068576 Simplifying v + 3.833333334 = 4.096068576 Reorder the terms: 3.833333334 + v = 4.096068576 Solving 3.833333334 + v = 4.096068576 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-3.833333334' to each side of the equation. 3.833333334 + -3.833333334 + v = 4.096068576 + -3.833333334 Combine like terms: 3.833333334 + -3.833333334 = 0.000000000 0.000000000 + v = 4.096068576 + -3.833333334 v = 4.096068576 + -3.833333334 Combine like terms: 4.096068576 + -3.833333334 = 0.262735242 v = 0.262735242 Simplifying v = 0.262735242

Subproblem 2

v + 3.833333334 = -4.096068576 Simplifying v + 3.833333334 = -4.096068576 Reorder the terms: 3.833333334 + v = -4.096068576 Solving 3.833333334 + v = -4.096068576 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-3.833333334' to each side of the equation. 3.833333334 + -3.833333334 + v = -4.096068576 + -3.833333334 Combine like terms: 3.833333334 + -3.833333334 = 0.000000000 0.000000000 + v = -4.096068576 + -3.833333334 v = -4.096068576 + -3.833333334 Combine like terms: -4.096068576 + -3.833333334 = -7.92940191 v = -7.92940191 Simplifying v = -7.92940191

Solution

The solution to the problem is based on the solutions from the subproblems. v = {0.262735242, -7.92940191}

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