(-7v^2+4v-2)+(5v^2+6v+1)=

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Solution for (-7v^2+4v-2)+(5v^2+6v+1)= equation:


Simplifying
(-7v2 + 4v + -2) + (5v2 + 6v + 1) = 0

Reorder the terms:
(-2 + 4v + -7v2) + (5v2 + 6v + 1) = 0

Remove parenthesis around (-2 + 4v + -7v2)
-2 + 4v + -7v2 + (5v2 + 6v + 1) = 0

Reorder the terms:
-2 + 4v + -7v2 + (1 + 6v + 5v2) = 0

Remove parenthesis around (1 + 6v + 5v2)
-2 + 4v + -7v2 + 1 + 6v + 5v2 = 0

Reorder the terms:
-2 + 1 + 4v + 6v + -7v2 + 5v2 = 0

Combine like terms: -2 + 1 = -1
-1 + 4v + 6v + -7v2 + 5v2 = 0

Combine like terms: 4v + 6v = 10v
-1 + 10v + -7v2 + 5v2 = 0

Combine like terms: -7v2 + 5v2 = -2v2
-1 + 10v + -2v2 = 0

Solving
-1 + 10v + -2v2 = 0

Solving for variable 'v'.

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

Divide each side by '-2'.
0.5 + -5v + v2 = 0

Move the constant term to the right:

Add '-0.5' to each side of the equation.
0.5 + -5v + -0.5 + v2 = 0 + -0.5

Reorder the terms:
0.5 + -0.5 + -5v + v2 = 0 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + -5v + v2 = 0 + -0.5
-5v + v2 = 0 + -0.5

Combine like terms: 0 + -0.5 = -0.5
-5v + v2 = -0.5

The v term is -5v.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5v + 6.25 + v2 = -0.5 + 6.25

Reorder the terms:
6.25 + -5v + v2 = -0.5 + 6.25

Combine like terms: -0.5 + 6.25 = 5.75
6.25 + -5v + v2 = 5.75

Factor a perfect square on the left side:
(v + -2.5)(v + -2.5) = 5.75

Calculate the square root of the right side: 2.397915762

Break this problem into two subproblems by setting 
(v + -2.5) equal to 2.397915762 and -2.397915762.

Subproblem 1

v + -2.5 = 2.397915762 Simplifying v + -2.5 = 2.397915762 Reorder the terms: -2.5 + v = 2.397915762 Solving -2.5 + v = 2.397915762 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + v = 2.397915762 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + v = 2.397915762 + 2.5 v = 2.397915762 + 2.5 Combine like terms: 2.397915762 + 2.5 = 4.897915762 v = 4.897915762 Simplifying v = 4.897915762

Subproblem 2

v + -2.5 = -2.397915762 Simplifying v + -2.5 = -2.397915762 Reorder the terms: -2.5 + v = -2.397915762 Solving -2.5 + v = -2.397915762 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + v = -2.397915762 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + v = -2.397915762 + 2.5 v = -2.397915762 + 2.5 Combine like terms: -2.397915762 + 2.5 = 0.102084238 v = 0.102084238 Simplifying v = 0.102084238

Solution

The solution to the problem is based on the solutions from the subproblems. v = {4.897915762, 0.102084238}

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