4v^2-12v-14=-11

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Solution for 4v^2-12v-14=-11 equation:


Simplifying
4v2 + -12v + -14 = -11

Reorder the terms:
-14 + -12v + 4v2 = -11

Solving
-14 + -12v + 4v2 = -11

Solving for variable 'v'.

Reorder the terms:
-14 + 11 + -12v + 4v2 = -11 + 11

Combine like terms: -14 + 11 = -3
-3 + -12v + 4v2 = -11 + 11

Combine like terms: -11 + 11 = 0
-3 + -12v + 4v2 = 0

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

Divide each side by '4'.
-0.75 + -3v + v2 = 0

Move the constant term to the right:

Add '0.75' to each side of the equation.
-0.75 + -3v + 0.75 + v2 = 0 + 0.75

Reorder the terms:
-0.75 + 0.75 + -3v + v2 = 0 + 0.75

Combine like terms: -0.75 + 0.75 = 0.00
0.00 + -3v + v2 = 0 + 0.75
-3v + v2 = 0 + 0.75

Combine like terms: 0 + 0.75 = 0.75
-3v + v2 = 0.75

The v term is -3v.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3v + 2.25 + v2 = 0.75 + 2.25

Reorder the terms:
2.25 + -3v + v2 = 0.75 + 2.25

Combine like terms: 0.75 + 2.25 = 3
2.25 + -3v + v2 = 3

Factor a perfect square on the left side:
(v + -1.5)(v + -1.5) = 3

Calculate the square root of the right side: 1.732050808

Break this problem into two subproblems by setting 
(v + -1.5) equal to 1.732050808 and -1.732050808.

Subproblem 1

v + -1.5 = 1.732050808 Simplifying v + -1.5 = 1.732050808 Reorder the terms: -1.5 + v = 1.732050808 Solving -1.5 + v = 1.732050808 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + v = 1.732050808 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + v = 1.732050808 + 1.5 v = 1.732050808 + 1.5 Combine like terms: 1.732050808 + 1.5 = 3.232050808 v = 3.232050808 Simplifying v = 3.232050808

Subproblem 2

v + -1.5 = -1.732050808 Simplifying v + -1.5 = -1.732050808 Reorder the terms: -1.5 + v = -1.732050808 Solving -1.5 + v = -1.732050808 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + v = -1.732050808 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + v = -1.732050808 + 1.5 v = -1.732050808 + 1.5 Combine like terms: -1.732050808 + 1.5 = -0.232050808 v = -0.232050808 Simplifying v = -0.232050808

Solution

The solution to the problem is based on the solutions from the subproblems. v = {3.232050808, -0.232050808}

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