0=2v^2+1v-47

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Solution for 0=2v^2+1v-47 equation:


Simplifying
0 = 2v2 + 1v + -47

Reorder the terms:
0 = -47 + 1v + 2v2

Solving
0 = -47 + 1v + 2v2

Solving for variable 'v'.

Combine like terms: 0 + 47 = 47
47 + -1v + -2v2 = -47 + 1v + 2v2 + 47 + -1v + -2v2

Reorder the terms:
47 + -1v + -2v2 = -47 + 47 + 1v + -1v + 2v2 + -2v2

Combine like terms: -47 + 47 = 0
47 + -1v + -2v2 = 0 + 1v + -1v + 2v2 + -2v2
47 + -1v + -2v2 = 1v + -1v + 2v2 + -2v2

Combine like terms: 1v + -1v = 0
47 + -1v + -2v2 = 0 + 2v2 + -2v2
47 + -1v + -2v2 = 2v2 + -2v2

Combine like terms: 2v2 + -2v2 = 0
47 + -1v + -2v2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
-23.5 + 0.5v + v2 = 0

Move the constant term to the right:

Add '23.5' to each side of the equation.
-23.5 + 0.5v + 23.5 + v2 = 0 + 23.5

Reorder the terms:
-23.5 + 23.5 + 0.5v + v2 = 0 + 23.5

Combine like terms: -23.5 + 23.5 = 0.0
0.0 + 0.5v + v2 = 0 + 23.5
0.5v + v2 = 0 + 23.5

Combine like terms: 0 + 23.5 = 23.5
0.5v + v2 = 23.5

The v term is 0.5v.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5v + 0.0625 + v2 = 23.5 + 0.0625

Reorder the terms:
0.0625 + 0.5v + v2 = 23.5 + 0.0625

Combine like terms: 23.5 + 0.0625 = 23.5625
0.0625 + 0.5v + v2 = 23.5625

Factor a perfect square on the left side:
(v + 0.25)(v + 0.25) = 23.5625

Calculate the square root of the right side: 4.85412196

Break this problem into two subproblems by setting 
(v + 0.25) equal to 4.85412196 and -4.85412196.

Subproblem 1

v + 0.25 = 4.85412196 Simplifying v + 0.25 = 4.85412196 Reorder the terms: 0.25 + v = 4.85412196 Solving 0.25 + v = 4.85412196 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + v = 4.85412196 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + v = 4.85412196 + -0.25 v = 4.85412196 + -0.25 Combine like terms: 4.85412196 + -0.25 = 4.60412196 v = 4.60412196 Simplifying v = 4.60412196

Subproblem 2

v + 0.25 = -4.85412196 Simplifying v + 0.25 = -4.85412196 Reorder the terms: 0.25 + v = -4.85412196 Solving 0.25 + v = -4.85412196 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + v = -4.85412196 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + v = -4.85412196 + -0.25 v = -4.85412196 + -0.25 Combine like terms: -4.85412196 + -0.25 = -5.10412196 v = -5.10412196 Simplifying v = -5.10412196

Solution

The solution to the problem is based on the solutions from the subproblems. v = {4.60412196, -5.10412196}

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