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

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


Simplifying
(2v2 + -3v + 4) + -1(-6v2 + v + 5) = 0

Reorder the terms:
(4 + -3v + 2v2) + -1(-6v2 + v + 5) = 0

Remove parenthesis around (4 + -3v + 2v2)
4 + -3v + 2v2 + -1(-6v2 + v + 5) = 0

Reorder the terms:
4 + -3v + 2v2 + -1(5 + v + -6v2) = 0
4 + -3v + 2v2 + (5 * -1 + v * -1 + -6v2 * -1) = 0
4 + -3v + 2v2 + (-5 + -1v + 6v2) = 0

Reorder the terms:
4 + -5 + -3v + -1v + 2v2 + 6v2 = 0

Combine like terms: 4 + -5 = -1
-1 + -3v + -1v + 2v2 + 6v2 = 0

Combine like terms: -3v + -1v = -4v
-1 + -4v + 2v2 + 6v2 = 0

Combine like terms: 2v2 + 6v2 = 8v2
-1 + -4v + 8v2 = 0

Solving
-1 + -4v + 8v2 = 0

Solving for variable 'v'.

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

Divide each side by '8'.
-0.125 + -0.5v + v2 = 0

Move the constant term to the right:

Add '0.125' to each side of the equation.
-0.125 + -0.5v + 0.125 + v2 = 0 + 0.125

Reorder the terms:
-0.125 + 0.125 + -0.5v + v2 = 0 + 0.125

Combine like terms: -0.125 + 0.125 = 0.000
0.000 + -0.5v + v2 = 0 + 0.125
-0.5v + v2 = 0 + 0.125

Combine like terms: 0 + 0.125 = 0.125
-0.5v + v2 = 0.125

The v term is -0.5v.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5v + 0.0625 + v2 = 0.125 + 0.0625

Reorder the terms:
0.0625 + -0.5v + v2 = 0.125 + 0.0625

Combine like terms: 0.125 + 0.0625 = 0.1875
0.0625 + -0.5v + v2 = 0.1875

Factor a perfect square on the left side:
(v + -0.25)(v + -0.25) = 0.1875

Calculate the square root of the right side: 0.433012702

Break this problem into two subproblems by setting 
(v + -0.25) equal to 0.433012702 and -0.433012702.

Subproblem 1

v + -0.25 = 0.433012702 Simplifying v + -0.25 = 0.433012702 Reorder the terms: -0.25 + v = 0.433012702 Solving -0.25 + v = 0.433012702 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + v = 0.433012702 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + v = 0.433012702 + 0.25 v = 0.433012702 + 0.25 Combine like terms: 0.433012702 + 0.25 = 0.683012702 v = 0.683012702 Simplifying v = 0.683012702

Subproblem 2

v + -0.25 = -0.433012702 Simplifying v + -0.25 = -0.433012702 Reorder the terms: -0.25 + v = -0.433012702 Solving -0.25 + v = -0.433012702 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + v = -0.433012702 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + v = -0.433012702 + 0.25 v = -0.433012702 + 0.25 Combine like terms: -0.433012702 + 0.25 = -0.183012702 v = -0.183012702 Simplifying v = -0.183012702

Solution

The solution to the problem is based on the solutions from the subproblems. v = {0.683012702, -0.183012702}

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