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

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


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

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

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

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

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

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

Combine like terms: 2 + 6 = 8
8 + -7v + v + 4v2 + -5v2 = 0

Combine like terms: -7v + v = -6v
8 + -6v + 4v2 + -5v2 = 0

Combine like terms: 4v2 + -5v2 = -1v2
8 + -6v + -1v2 = 0

Solving
8 + -6v + -1v2 = 0

Solving for variable 'v'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-8 + 6v + v2 = 0

Move the constant term to the right:

Add '8' to each side of the equation.
-8 + 6v + 8 + v2 = 0 + 8

Reorder the terms:
-8 + 8 + 6v + v2 = 0 + 8

Combine like terms: -8 + 8 = 0
0 + 6v + v2 = 0 + 8
6v + v2 = 0 + 8

Combine like terms: 0 + 8 = 8
6v + v2 = 8

The v term is 6v.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6v + 9 + v2 = 8 + 9

Reorder the terms:
9 + 6v + v2 = 8 + 9

Combine like terms: 8 + 9 = 17
9 + 6v + v2 = 17

Factor a perfect square on the left side:
(v + 3)(v + 3) = 17

Calculate the square root of the right side: 4.123105626

Break this problem into two subproblems by setting 
(v + 3) equal to 4.123105626 and -4.123105626.

Subproblem 1

v + 3 = 4.123105626 Simplifying v + 3 = 4.123105626 Reorder the terms: 3 + v = 4.123105626 Solving 3 + v = 4.123105626 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + v = 4.123105626 + -3 Combine like terms: 3 + -3 = 0 0 + v = 4.123105626 + -3 v = 4.123105626 + -3 Combine like terms: 4.123105626 + -3 = 1.123105626 v = 1.123105626 Simplifying v = 1.123105626

Subproblem 2

v + 3 = -4.123105626 Simplifying v + 3 = -4.123105626 Reorder the terms: 3 + v = -4.123105626 Solving 3 + v = -4.123105626 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + v = -4.123105626 + -3 Combine like terms: 3 + -3 = 0 0 + v = -4.123105626 + -3 v = -4.123105626 + -3 Combine like terms: -4.123105626 + -3 = -7.123105626 v = -7.123105626 Simplifying v = -7.123105626

Solution

The solution to the problem is based on the solutions from the subproblems. v = {1.123105626, -7.123105626}

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