2v^2-11v-5=(v+5)(v+5)

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


Simplifying
2v2 + -11v + -5 = (v + 5)(v + 5)

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

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

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

Multiply (5 + v) * (5 + v)
-5 + -11v + 2v2 = (5(5 + v) + v(5 + v))
-5 + -11v + 2v2 = ((5 * 5 + v * 5) + v(5 + v))
-5 + -11v + 2v2 = ((25 + 5v) + v(5 + v))
-5 + -11v + 2v2 = (25 + 5v + (5 * v + v * v))
-5 + -11v + 2v2 = (25 + 5v + (5v + v2))

Combine like terms: 5v + 5v = 10v
-5 + -11v + 2v2 = (25 + 10v + v2)

Solving
-5 + -11v + 2v2 = 25 + 10v + v2

Solving for variable 'v'.

Reorder the terms:
-5 + -25 + -11v + -10v + 2v2 + -1v2 = 25 + 10v + v2 + -25 + -10v + -1v2

Combine like terms: -5 + -25 = -30
-30 + -11v + -10v + 2v2 + -1v2 = 25 + 10v + v2 + -25 + -10v + -1v2

Combine like terms: -11v + -10v = -21v
-30 + -21v + 2v2 + -1v2 = 25 + 10v + v2 + -25 + -10v + -1v2

Combine like terms: 2v2 + -1v2 = 1v2
-30 + -21v + 1v2 = 25 + 10v + v2 + -25 + -10v + -1v2

Reorder the terms:
-30 + -21v + 1v2 = 25 + -25 + 10v + -10v + v2 + -1v2

Combine like terms: 25 + -25 = 0
-30 + -21v + 1v2 = 0 + 10v + -10v + v2 + -1v2
-30 + -21v + 1v2 = 10v + -10v + v2 + -1v2

Combine like terms: 10v + -10v = 0
-30 + -21v + 1v2 = 0 + v2 + -1v2
-30 + -21v + 1v2 = v2 + -1v2

Combine like terms: v2 + -1v2 = 0
-30 + -21v + 1v2 = 0

Begin completing the square.

Move the constant term to the right:

Add '30' to each side of the equation.
-30 + -21v + 30 + v2 = 0 + 30

Reorder the terms:
-30 + 30 + -21v + v2 = 0 + 30

Combine like terms: -30 + 30 = 0
0 + -21v + v2 = 0 + 30
-21v + v2 = 0 + 30

Combine like terms: 0 + 30 = 30
-21v + v2 = 30

The v term is -21v.  Take half its coefficient (-10.5).
Square it (110.25) and add it to both sides.

Add '110.25' to each side of the equation.
-21v + 110.25 + v2 = 30 + 110.25

Reorder the terms:
110.25 + -21v + v2 = 30 + 110.25

Combine like terms: 30 + 110.25 = 140.25
110.25 + -21v + v2 = 140.25

Factor a perfect square on the left side:
(v + -10.5)(v + -10.5) = 140.25

Calculate the square root of the right side: 11.842719282

Break this problem into two subproblems by setting 
(v + -10.5) equal to 11.842719282 and -11.842719282.

Subproblem 1

v + -10.5 = 11.842719282 Simplifying v + -10.5 = 11.842719282 Reorder the terms: -10.5 + v = 11.842719282 Solving -10.5 + v = 11.842719282 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '10.5' to each side of the equation. -10.5 + 10.5 + v = 11.842719282 + 10.5 Combine like terms: -10.5 + 10.5 = 0.0 0.0 + v = 11.842719282 + 10.5 v = 11.842719282 + 10.5 Combine like terms: 11.842719282 + 10.5 = 22.342719282 v = 22.342719282 Simplifying v = 22.342719282

Subproblem 2

v + -10.5 = -11.842719282 Simplifying v + -10.5 = -11.842719282 Reorder the terms: -10.5 + v = -11.842719282 Solving -10.5 + v = -11.842719282 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '10.5' to each side of the equation. -10.5 + 10.5 + v = -11.842719282 + 10.5 Combine like terms: -10.5 + 10.5 = 0.0 0.0 + v = -11.842719282 + 10.5 v = -11.842719282 + 10.5 Combine like terms: -11.842719282 + 10.5 = -1.342719282 v = -1.342719282 Simplifying v = -1.342719282

Solution

The solution to the problem is based on the solutions from the subproblems. v = {22.342719282, -1.342719282}

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