-8k^2-12k+4=0

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Solution for -8k^2-12k+4=0 equation: 


Simplifying
-8k2 + -12k + 4 = 0

Reorder the terms:
4 + -12k + -8k2 = 0

Solving
4 + -12k + -8k2 = 0

Solving for variable 'k'.

Factor out the Greatest Common Factor (GCF), '4'.
4(1 + -3k + -2k2) = 0

Ignore the factor 4.

Subproblem 1
Set the factor '(1 + -3k + -2k2)' equal to zero and attempt to solve:

Simplifying
1 + -3k + -2k2 = 0

Solving
1 + -3k + -2k2 = 0

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

Divide each side by '-2'.
-0.5 + 1.5k + k2 = 0

Move the constant term to the right:

Add '0.5' to each side of the equation.
-0.5 + 1.5k + 0.5 + k2 = 0 + 0.5

Reorder the terms:
-0.5 + 0.5 + 1.5k + k2 = 0 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + 1.5k + k2 = 0 + 0.5
1.5k + k2 = 0 + 0.5

Combine like terms: 0 + 0.5 = 0.5
1.5k + k2 = 0.5

The k term is 1.5k.  Take half its coefficient (0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
1.5k + 0.5625 + k2 = 0.5 + 0.5625

Reorder the terms:
0.5625 + 1.5k + k2 = 0.5 + 0.5625

Combine like terms: 0.5 + 0.5625 = 1.0625
0.5625 + 1.5k + k2 = 1.0625

Factor a perfect square on the left side:
(k + 0.75)(k + 0.75) = 1.0625

Calculate the square root of the right side: 1.030776406

Break this problem into two subproblems by setting 
(k + 0.75) equal to 1.030776406 and -1.030776406.


Subproblem 1
k + 0.75 = 1.030776406

Simplifying
k + 0.75 = 1.030776406

Reorder the terms:
0.75 + k = 1.030776406

Solving
0.75 + k = 1.030776406

Solving for variable 'k'.

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

Add '-0.75' to each side of the equation.
0.75 + -0.75 + k = 1.030776406 + -0.75

Combine like terms: 0.75 + -0.75 = 0.00
0.00 + k = 1.030776406 + -0.75
k = 1.030776406 + -0.75

Combine like terms: 1.030776406 + -0.75 = 0.280776406
k = 0.280776406

Simplifying
k = 0.280776406


Subproblem 2
k + 0.75 = -1.030776406

Simplifying
k + 0.75 = -1.030776406

Reorder the terms:
0.75 + k = -1.030776406

Solving
0.75 + k = -1.030776406

Solving for variable 'k'.

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

Add '-0.75' to each side of the equation.
0.75 + -0.75 + k = -1.030776406 + -0.75

Combine like terms: 0.75 + -0.75 = 0.00
0.00 + k = -1.030776406 + -0.75
k = -1.030776406 + -0.75

Combine like terms: -1.030776406 + -0.75 = -1.780776406
k = -1.780776406

Simplifying
k = -1.780776406


Solution
The solution to the problem is based on the solutions
from the subproblems.
k = {0.280776406, -1.780776406}
Solution
k = {0.280776406, -1.780776406}

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