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

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


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

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

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

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

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

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

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

Combine like terms: 6v + 5v = 11v
2 + 11v + -3v2 + v2 = 0

Combine like terms: -3v2 + v2 = -2v2
2 + 11v + -2v2 = 0

Solving
2 + 11v + -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 + -5.5v + v2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -5.5v + 1 + v2 = 0 + 1

Reorder the terms:
-1 + 1 + -5.5v + v2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -5.5v + v2 = 0 + 1
-5.5v + v2 = 0 + 1

Combine like terms: 0 + 1 = 1
-5.5v + v2 = 1

The v term is -5.5v.  Take half its coefficient (-2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
-5.5v + 7.5625 + v2 = 1 + 7.5625

Reorder the terms:
7.5625 + -5.5v + v2 = 1 + 7.5625

Combine like terms: 1 + 7.5625 = 8.5625
7.5625 + -5.5v + v2 = 8.5625

Factor a perfect square on the left side:
(v + -2.75)(v + -2.75) = 8.5625

Calculate the square root of the right side: 2.926174978

Break this problem into two subproblems by setting 
(v + -2.75) equal to 2.926174978 and -2.926174978.

Subproblem 1

v + -2.75 = 2.926174978 Simplifying v + -2.75 = 2.926174978 Reorder the terms: -2.75 + v = 2.926174978 Solving -2.75 + v = 2.926174978 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + v = 2.926174978 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + v = 2.926174978 + 2.75 v = 2.926174978 + 2.75 Combine like terms: 2.926174978 + 2.75 = 5.676174978 v = 5.676174978 Simplifying v = 5.676174978

Subproblem 2

v + -2.75 = -2.926174978 Simplifying v + -2.75 = -2.926174978 Reorder the terms: -2.75 + v = -2.926174978 Solving -2.75 + v = -2.926174978 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + v = -2.926174978 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + v = -2.926174978 + 2.75 v = -2.926174978 + 2.75 Combine like terms: -2.926174978 + 2.75 = -0.176174978 v = -0.176174978 Simplifying v = -0.176174978

Solution

The solution to the problem is based on the solutions from the subproblems. v = {5.676174978, -0.176174978}

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