6v+79-v^2=16

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Solution for 6v+79-v^2=16 equation:


Simplifying
6v + 79 + -1v2 = 16

Reorder the terms:
79 + 6v + -1v2 = 16

Solving
79 + 6v + -1v2 = 16

Solving for variable 'v'.

Reorder the terms:
79 + -16 + 6v + -1v2 = 16 + -16

Combine like terms: 79 + -16 = 63
63 + 6v + -1v2 = 16 + -16

Combine like terms: 16 + -16 = 0
63 + 6v + -1v2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-63 + -6v + v2 = 0

Move the constant term to the right:

Add '63' to each side of the equation.
-63 + -6v + 63 + v2 = 0 + 63

Reorder the terms:
-63 + 63 + -6v + v2 = 0 + 63

Combine like terms: -63 + 63 = 0
0 + -6v + v2 = 0 + 63
-6v + v2 = 0 + 63

Combine like terms: 0 + 63 = 63
-6v + v2 = 63

The v term is -6v.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6v + 9 + v2 = 63 + 9

Reorder the terms:
9 + -6v + v2 = 63 + 9

Combine like terms: 63 + 9 = 72
9 + -6v + v2 = 72

Factor a perfect square on the left side:
(v + -3)(v + -3) = 72

Calculate the square root of the right side: 8.485281374

Break this problem into two subproblems by setting 
(v + -3) equal to 8.485281374 and -8.485281374.

Subproblem 1

v + -3 = 8.485281374 Simplifying v + -3 = 8.485281374 Reorder the terms: -3 + v = 8.485281374 Solving -3 + v = 8.485281374 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + v = 8.485281374 + 3 Combine like terms: -3 + 3 = 0 0 + v = 8.485281374 + 3 v = 8.485281374 + 3 Combine like terms: 8.485281374 + 3 = 11.485281374 v = 11.485281374 Simplifying v = 11.485281374

Subproblem 2

v + -3 = -8.485281374 Simplifying v + -3 = -8.485281374 Reorder the terms: -3 + v = -8.485281374 Solving -3 + v = -8.485281374 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + v = -8.485281374 + 3 Combine like terms: -3 + 3 = 0 0 + v = -8.485281374 + 3 v = -8.485281374 + 3 Combine like terms: -8.485281374 + 3 = -5.485281374 v = -5.485281374 Simplifying v = -5.485281374

Solution

The solution to the problem is based on the solutions from the subproblems. v = {11.485281374, -5.485281374}

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