(-5v^2+6v-2)+(3v^2+7v+4)=

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Solution for (-5v^2+6v-2)+(3v^2+7v+4)= equation:


Simplifying
(-5v2 + 6v + -2) + (3v2 + 7v + 4) = 0

Reorder the terms:
(-2 + 6v + -5v2) + (3v2 + 7v + 4) = 0

Remove parenthesis around (-2 + 6v + -5v2)
-2 + 6v + -5v2 + (3v2 + 7v + 4) = 0

Reorder the terms:
-2 + 6v + -5v2 + (4 + 7v + 3v2) = 0

Remove parenthesis around (4 + 7v + 3v2)
-2 + 6v + -5v2 + 4 + 7v + 3v2 = 0

Reorder the terms:
-2 + 4 + 6v + 7v + -5v2 + 3v2 = 0

Combine like terms: -2 + 4 = 2
2 + 6v + 7v + -5v2 + 3v2 = 0

Combine like terms: 6v + 7v = 13v
2 + 13v + -5v2 + 3v2 = 0

Combine like terms: -5v2 + 3v2 = -2v2
2 + 13v + -2v2 = 0

Solving
2 + 13v + -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'.
-1 + -6.5v + v2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -6.5v + 1 + v2 = 0 + 1

Reorder the terms:
-1 + 1 + -6.5v + v2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -6.5v + v2 = 0 + 1
-6.5v + v2 = 0 + 1

Combine like terms: 0 + 1 = 1
-6.5v + v2 = 1

The v term is -6.5v.  Take half its coefficient (-3.25).
Square it (10.5625) and add it to both sides.

Add '10.5625' to each side of the equation.
-6.5v + 10.5625 + v2 = 1 + 10.5625

Reorder the terms:
10.5625 + -6.5v + v2 = 1 + 10.5625

Combine like terms: 1 + 10.5625 = 11.5625
10.5625 + -6.5v + v2 = 11.5625

Factor a perfect square on the left side:
(v + -3.25)(v + -3.25) = 11.5625

Calculate the square root of the right side: 3.400367627

Break this problem into two subproblems by setting 
(v + -3.25) equal to 3.400367627 and -3.400367627.

Subproblem 1

v + -3.25 = 3.400367627 Simplifying v + -3.25 = 3.400367627 Reorder the terms: -3.25 + v = 3.400367627 Solving -3.25 + v = 3.400367627 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '3.25' to each side of the equation. -3.25 + 3.25 + v = 3.400367627 + 3.25 Combine like terms: -3.25 + 3.25 = 0.00 0.00 + v = 3.400367627 + 3.25 v = 3.400367627 + 3.25 Combine like terms: 3.400367627 + 3.25 = 6.650367627 v = 6.650367627 Simplifying v = 6.650367627

Subproblem 2

v + -3.25 = -3.400367627 Simplifying v + -3.25 = -3.400367627 Reorder the terms: -3.25 + v = -3.400367627 Solving -3.25 + v = -3.400367627 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '3.25' to each side of the equation. -3.25 + 3.25 + v = -3.400367627 + 3.25 Combine like terms: -3.25 + 3.25 = 0.00 0.00 + v = -3.400367627 + 3.25 v = -3.400367627 + 3.25 Combine like terms: -3.400367627 + 3.25 = -0.150367627 v = -0.150367627 Simplifying v = -0.150367627

Solution

The solution to the problem is based on the solutions from the subproblems. v = {6.650367627, -0.150367627}

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