2v^2+11v-5=v^2+25

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Solution for 2v^2+11v-5=v^2+25 equation:


Simplifying
2v2 + 11v + -5 = v2 + 25

Reorder the terms:
-5 + 11v + 2v2 = v2 + 25

Reorder the terms:
-5 + 11v + 2v2 = 25 + v2

Solving
-5 + 11v + 2v2 = 25 + v2

Solving for variable 'v'.

Reorder the terms:
-5 + -25 + 11v + 2v2 + -1v2 = 25 + v2 + -25 + -1v2

Combine like terms: -5 + -25 = -30
-30 + 11v + 2v2 + -1v2 = 25 + v2 + -25 + -1v2

Combine like terms: 2v2 + -1v2 = 1v2
-30 + 11v + 1v2 = 25 + v2 + -25 + -1v2

Reorder the terms:
-30 + 11v + 1v2 = 25 + -25 + v2 + -1v2

Combine like terms: 25 + -25 = 0
-30 + 11v + 1v2 = 0 + v2 + -1v2
-30 + 11v + 1v2 = v2 + -1v2

Combine like terms: v2 + -1v2 = 0
-30 + 11v + 1v2 = 0

Begin completing the square.

Move the constant term to the right:

Add '30' to each side of the equation.
-30 + 11v + 30 + v2 = 0 + 30

Reorder the terms:
-30 + 30 + 11v + v2 = 0 + 30

Combine like terms: -30 + 30 = 0
0 + 11v + v2 = 0 + 30
11v + v2 = 0 + 30

Combine like terms: 0 + 30 = 30
11v + v2 = 30

The v term is 11v.  Take half its coefficient (5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
11v + 30.25 + v2 = 30 + 30.25

Reorder the terms:
30.25 + 11v + v2 = 30 + 30.25

Combine like terms: 30 + 30.25 = 60.25
30.25 + 11v + v2 = 60.25

Factor a perfect square on the left side:
(v + 5.5)(v + 5.5) = 60.25

Calculate the square root of the right side: 7.762087348

Break this problem into two subproblems by setting 
(v + 5.5) equal to 7.762087348 and -7.762087348.

Subproblem 1

v + 5.5 = 7.762087348 Simplifying v + 5.5 = 7.762087348 Reorder the terms: 5.5 + v = 7.762087348 Solving 5.5 + v = 7.762087348 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + v = 7.762087348 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + v = 7.762087348 + -5.5 v = 7.762087348 + -5.5 Combine like terms: 7.762087348 + -5.5 = 2.262087348 v = 2.262087348 Simplifying v = 2.262087348

Subproblem 2

v + 5.5 = -7.762087348 Simplifying v + 5.5 = -7.762087348 Reorder the terms: 5.5 + v = -7.762087348 Solving 5.5 + v = -7.762087348 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + v = -7.762087348 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + v = -7.762087348 + -5.5 v = -7.762087348 + -5.5 Combine like terms: -7.762087348 + -5.5 = -13.262087348 v = -13.262087348 Simplifying v = -13.262087348

Solution

The solution to the problem is based on the solutions from the subproblems. v = {2.262087348, -13.262087348}

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