(v+2)(v+2)-50=0

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Solution for (v+2)(v+2)-50=0 equation:


Simplifying
(v + 2)(v + 2) + -50 = 0

Reorder the terms:
(2 + v)(v + 2) + -50 = 0

Reorder the terms:
(2 + v)(2 + v) + -50 = 0

Multiply (2 + v) * (2 + v)
(2(2 + v) + v(2 + v)) + -50 = 0
((2 * 2 + v * 2) + v(2 + v)) + -50 = 0
((4 + 2v) + v(2 + v)) + -50 = 0
(4 + 2v + (2 * v + v * v)) + -50 = 0
(4 + 2v + (2v + v2)) + -50 = 0

Combine like terms: 2v + 2v = 4v
(4 + 4v + v2) + -50 = 0

Reorder the terms:
4 + -50 + 4v + v2 = 0

Combine like terms: 4 + -50 = -46
-46 + 4v + v2 = 0

Solving
-46 + 4v + v2 = 0

Solving for variable 'v'.

Begin completing the square.

Move the constant term to the right:

Add '46' to each side of the equation.
-46 + 4v + 46 + v2 = 0 + 46

Reorder the terms:
-46 + 46 + 4v + v2 = 0 + 46

Combine like terms: -46 + 46 = 0
0 + 4v + v2 = 0 + 46
4v + v2 = 0 + 46

Combine like terms: 0 + 46 = 46
4v + v2 = 46

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 = 46 + 4

Reorder the terms:
4 + 4v + v2 = 46 + 4

Combine like terms: 46 + 4 = 50
4 + 4v + v2 = 50

Factor a perfect square on the left side:
(v + 2)(v + 2) = 50

Calculate the square root of the right side: 7.071067812

Break this problem into two subproblems by setting 
(v + 2) equal to 7.071067812 and -7.071067812.

Subproblem 1

v + 2 = 7.071067812 Simplifying v + 2 = 7.071067812 Reorder the terms: 2 + v = 7.071067812 Solving 2 + v = 7.071067812 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 = 7.071067812 + -2 Combine like terms: 2 + -2 = 0 0 + v = 7.071067812 + -2 v = 7.071067812 + -2 Combine like terms: 7.071067812 + -2 = 5.071067812 v = 5.071067812 Simplifying v = 5.071067812

Subproblem 2

v + 2 = -7.071067812 Simplifying v + 2 = -7.071067812 Reorder the terms: 2 + v = -7.071067812 Solving 2 + v = -7.071067812 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 = -7.071067812 + -2 Combine like terms: 2 + -2 = 0 0 + v = -7.071067812 + -2 v = -7.071067812 + -2 Combine like terms: -7.071067812 + -2 = -9.071067812 v = -9.071067812 Simplifying v = -9.071067812

Solution

The solution to the problem is based on the solutions from the subproblems. v = {5.071067812, -9.071067812}

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