v^2-4v=37

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Solution for v^2-4v=37 equation:


Simplifying
v2 + -4v = 37

Reorder the terms:
-4v + v2 = 37

Solving
-4v + v2 = 37

Solving for variable 'v'.

Reorder the terms:
-37 + -4v + v2 = 37 + -37

Combine like terms: 37 + -37 = 0
-37 + -4v + v2 = 0

Begin completing the square.

Move the constant term to the right:

Add '37' to each side of the equation.
-37 + -4v + 37 + v2 = 0 + 37

Reorder the terms:
-37 + 37 + -4v + v2 = 0 + 37

Combine like terms: -37 + 37 = 0
0 + -4v + v2 = 0 + 37
-4v + v2 = 0 + 37

Combine like terms: 0 + 37 = 37
-4v + v2 = 37

The v term is -4v.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4v + 4 + v2 = 37 + 4

Reorder the terms:
4 + -4v + v2 = 37 + 4

Combine like terms: 37 + 4 = 41
4 + -4v + v2 = 41

Factor a perfect square on the left side:
(v + -2)(v + -2) = 41

Calculate the square root of the right side: 6.403124237

Break this problem into two subproblems by setting 
(v + -2) equal to 6.403124237 and -6.403124237.

Subproblem 1

v + -2 = 6.403124237 Simplifying v + -2 = 6.403124237 Reorder the terms: -2 + v = 6.403124237 Solving -2 + v = 6.403124237 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + v = 6.403124237 + 2 Combine like terms: -2 + 2 = 0 0 + v = 6.403124237 + 2 v = 6.403124237 + 2 Combine like terms: 6.403124237 + 2 = 8.403124237 v = 8.403124237 Simplifying v = 8.403124237

Subproblem 2

v + -2 = -6.403124237 Simplifying v + -2 = -6.403124237 Reorder the terms: -2 + v = -6.403124237 Solving -2 + v = -6.403124237 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + v = -6.403124237 + 2 Combine like terms: -2 + 2 = 0 0 + v = -6.403124237 + 2 v = -6.403124237 + 2 Combine like terms: -6.403124237 + 2 = -4.403124237 v = -4.403124237 Simplifying v = -4.403124237

Solution

The solution to the problem is based on the solutions from the subproblems. v = {8.403124237, -4.403124237}

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