(4v^2-7v-3)+(6v^2-2v+1)=

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Solution for (4v^2-7v-3)+(6v^2-2v+1)= equation:


Simplifying
(4v2 + -7v + -3) + (6v2 + -2v + 1) = 0

Reorder the terms:
(-3 + -7v + 4v2) + (6v2 + -2v + 1) = 0

Remove parenthesis around (-3 + -7v + 4v2)
-3 + -7v + 4v2 + (6v2 + -2v + 1) = 0

Reorder the terms:
-3 + -7v + 4v2 + (1 + -2v + 6v2) = 0

Remove parenthesis around (1 + -2v + 6v2)
-3 + -7v + 4v2 + 1 + -2v + 6v2 = 0

Reorder the terms:
-3 + 1 + -7v + -2v + 4v2 + 6v2 = 0

Combine like terms: -3 + 1 = -2
-2 + -7v + -2v + 4v2 + 6v2 = 0

Combine like terms: -7v + -2v = -9v
-2 + -9v + 4v2 + 6v2 = 0

Combine like terms: 4v2 + 6v2 = 10v2
-2 + -9v + 10v2 = 0

Solving
-2 + -9v + 10v2 = 0

Solving for variable 'v'.

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

Divide each side by '10'.
-0.2 + -0.9v + v2 = 0.0

Move the constant term to the right:

Add '0.2' to each side of the equation.
-0.2 + -0.9v + 0.2 + v2 = 0.0 + 0.2

Reorder the terms:
-0.2 + 0.2 + -0.9v + v2 = 0.0 + 0.2

Combine like terms: -0.2 + 0.2 = 0.0
0.0 + -0.9v + v2 = 0.0 + 0.2
-0.9v + v2 = 0.0 + 0.2

Combine like terms: 0.0 + 0.2 = 0.2
-0.9v + v2 = 0.2

The v term is -0.9v.  Take half its coefficient (-0.45).
Square it (0.2025) and add it to both sides.

Add '0.2025' to each side of the equation.
-0.9v + 0.2025 + v2 = 0.2 + 0.2025

Reorder the terms:
0.2025 + -0.9v + v2 = 0.2 + 0.2025

Combine like terms: 0.2 + 0.2025 = 0.4025
0.2025 + -0.9v + v2 = 0.4025

Factor a perfect square on the left side:
(v + -0.45)(v + -0.45) = 0.4025

Calculate the square root of the right side: 0.634428877

Break this problem into two subproblems by setting 
(v + -0.45) equal to 0.634428877 and -0.634428877.

Subproblem 1

v + -0.45 = 0.634428877 Simplifying v + -0.45 = 0.634428877 Reorder the terms: -0.45 + v = 0.634428877 Solving -0.45 + v = 0.634428877 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '0.45' to each side of the equation. -0.45 + 0.45 + v = 0.634428877 + 0.45 Combine like terms: -0.45 + 0.45 = 0.00 0.00 + v = 0.634428877 + 0.45 v = 0.634428877 + 0.45 Combine like terms: 0.634428877 + 0.45 = 1.084428877 v = 1.084428877 Simplifying v = 1.084428877

Subproblem 2

v + -0.45 = -0.634428877 Simplifying v + -0.45 = -0.634428877 Reorder the terms: -0.45 + v = -0.634428877 Solving -0.45 + v = -0.634428877 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '0.45' to each side of the equation. -0.45 + 0.45 + v = -0.634428877 + 0.45 Combine like terms: -0.45 + 0.45 = 0.00 0.00 + v = -0.634428877 + 0.45 v = -0.634428877 + 0.45 Combine like terms: -0.634428877 + 0.45 = -0.184428877 v = -0.184428877 Simplifying v = -0.184428877

Solution

The solution to the problem is based on the solutions from the subproblems. v = {1.084428877, -0.184428877}

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