3v^2+36v+49=84

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Solution for 3v^2+36v+49=84 equation:


Simplifying
3v2 + 36v + 49 = 84

Reorder the terms:
49 + 36v + 3v2 = 84

Solving
49 + 36v + 3v2 = 84

Solving for variable 'v'.

Reorder the terms:
49 + -84 + 36v + 3v2 = 84 + -84

Combine like terms: 49 + -84 = -35
-35 + 36v + 3v2 = 84 + -84

Combine like terms: 84 + -84 = 0
-35 + 36v + 3v2 = 0

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

Divide each side by '3'.
-11.66666667 + 12v + v2 = 0

Move the constant term to the right:

Add '11.66666667' to each side of the equation.
-11.66666667 + 12v + 11.66666667 + v2 = 0 + 11.66666667

Reorder the terms:
-11.66666667 + 11.66666667 + 12v + v2 = 0 + 11.66666667

Combine like terms: -11.66666667 + 11.66666667 = 0.00000000
0.00000000 + 12v + v2 = 0 + 11.66666667
12v + v2 = 0 + 11.66666667

Combine like terms: 0 + 11.66666667 = 11.66666667
12v + v2 = 11.66666667

The v term is 12v.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12v + 36 + v2 = 11.66666667 + 36

Reorder the terms:
36 + 12v + v2 = 11.66666667 + 36

Combine like terms: 11.66666667 + 36 = 47.66666667
36 + 12v + v2 = 47.66666667

Factor a perfect square on the left side:
(v + 6)(v + 6) = 47.66666667

Calculate the square root of the right side: 6.904105059

Break this problem into two subproblems by setting 
(v + 6) equal to 6.904105059 and -6.904105059.

Subproblem 1

v + 6 = 6.904105059 Simplifying v + 6 = 6.904105059 Reorder the terms: 6 + v = 6.904105059 Solving 6 + v = 6.904105059 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + v = 6.904105059 + -6 Combine like terms: 6 + -6 = 0 0 + v = 6.904105059 + -6 v = 6.904105059 + -6 Combine like terms: 6.904105059 + -6 = 0.904105059 v = 0.904105059 Simplifying v = 0.904105059

Subproblem 2

v + 6 = -6.904105059 Simplifying v + 6 = -6.904105059 Reorder the terms: 6 + v = -6.904105059 Solving 6 + v = -6.904105059 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + v = -6.904105059 + -6 Combine like terms: 6 + -6 = 0 0 + v = -6.904105059 + -6 v = -6.904105059 + -6 Combine like terms: -6.904105059 + -6 = -12.904105059 v = -12.904105059 Simplifying v = -12.904105059

Solution

The solution to the problem is based on the solutions from the subproblems. v = {0.904105059, -12.904105059}

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