-4k^2-4k+22=0

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Solution for -4k^2-4k+22=0 equation: 


Simplifying
-4k2 + -4k + 22 = 0

Reorder the terms:
22 + -4k + -4k2 = 0

Solving
22 + -4k + -4k2 = 0

Solving for variable 'k'.

Factor out the Greatest Common Factor (GCF), '2'.
2(11 + -2k + -2k2) = 0

Ignore the factor 2.

Subproblem 1
Set the factor '(11 + -2k + -2k2)' equal to zero and attempt to solve:

Simplifying
11 + -2k + -2k2 = 0

Solving
11 + -2k + -2k2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
-5.5 + k + k2 = 0

Move the constant term to the right:

Add '5.5' to each side of the equation.
-5.5 + k + 5.5 + k2 = 0 + 5.5

Reorder the terms:
-5.5 + 5.5 + k + k2 = 0 + 5.5

Combine like terms: -5.5 + 5.5 = 0.0
0.0 + k + k2 = 0 + 5.5
k + k2 = 0 + 5.5

Combine like terms: 0 + 5.5 = 5.5
k + k2 = 5.5

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

Add '0.25' to each side of the equation.
 + 0.25 + k2 = 5.5 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + k2 = 5.5 + 0.25

Combine like terms: 5.5 + 0.25 = 5.75
1.25 + k2 = 5.75

Factor a perfect square on the left side:
(k + 0.5)(k + 0.5) = 5.75

Calculate the square root of the right side: 2.397915762

Break this problem into two subproblems by setting 
(k + 0.5) equal to 2.397915762 and -2.397915762.


Subproblem 1
k + 0.5 = 2.397915762

Simplifying
k + 0.5 = 2.397915762

Reorder the terms:
0.5 + k = 2.397915762

Solving
0.5 + k = 2.397915762

Solving for variable 'k'.

Move all terms containing k to the left, all other terms to the right.

Add '-0.5' to each side of the equation.
0.5 + -0.5 + k = 2.397915762 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + k = 2.397915762 + -0.5
k = 2.397915762 + -0.5

Combine like terms: 2.397915762 + -0.5 = 1.897915762
k = 1.897915762

Simplifying
k = 1.897915762


Subproblem 2
k + 0.5 = -2.397915762

Simplifying
k + 0.5 = -2.397915762

Reorder the terms:
0.5 + k = -2.397915762

Solving
0.5 + k = -2.397915762

Solving for variable 'k'.

Move all terms containing k to the left, all other terms to the right.

Add '-0.5' to each side of the equation.
0.5 + -0.5 + k = -2.397915762 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + k = -2.397915762 + -0.5
k = -2.397915762 + -0.5

Combine like terms: -2.397915762 + -0.5 = -2.897915762
k = -2.897915762

Simplifying
k = -2.897915762


Solution
The solution to the problem is based on the solutions
from the subproblems.
k = {1.897915762, -2.897915762}
Solution
k = {1.897915762, -2.897915762}

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