6k^2+5k-7=0

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Solution for 6k^2+5k-7=0 equation: 


Simplifying
6k2 + 5k + -7 = 0

Reorder the terms:
-7 + 5k + 6k2 = 0

Solving
-7 + 5k + 6k2 = 0

Solving for variable 'k'.

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

Divide each side by '6'.
-1.166666667 + 0.8333333333k + k2 = 0

Move the constant term to the right:

Add '1.166666667' to each side of the equation.
-1.166666667 + 0.8333333333k + 1.166666667 + k2 = 0 + 1.166666667

Reorder the terms:
-1.166666667 + 1.166666667 + 0.8333333333k + k2 = 0 + 1.166666667

Combine like terms: -1.166666667 + 1.166666667 = 0.000000000
0.000000000 + 0.8333333333k + k2 = 0 + 1.166666667
0.8333333333k + k2 = 0 + 1.166666667

Combine like terms: 0 + 1.166666667 = 1.166666667
0.8333333333k + k2 = 1.166666667

The k term is 0.8333333333k.  Take half its coefficient (0.4166666667).
Square it (0.1736111111) and add it to both sides.

Add '0.1736111111' to each side of the equation.
0.8333333333k + 0.1736111111 + k2 = 1.166666667 + 0.1736111111

Reorder the terms:
0.1736111111 + 0.8333333333k + k2 = 1.166666667 + 0.1736111111

Combine like terms: 1.166666667 + 0.1736111111 = 1.3402777781
0.1736111111 + 0.8333333333k + k2 = 1.3402777781

Factor a perfect square on the left side:
(k + 0.4166666667)(k + 0.4166666667) = 1.3402777781

Calculate the square root of the right side: 1.157703666

Break this problem into two subproblems by setting 
(k + 0.4166666667) equal to 1.157703666 and -1.157703666.


Subproblem 1
k + 0.4166666667 = 1.157703666

Simplifying
k + 0.4166666667 = 1.157703666

Reorder the terms:
0.4166666667 + k = 1.157703666

Solving
0.4166666667 + k = 1.157703666

Solving for variable 'k'.

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

Add '-0.4166666667' to each side of the equation.
0.4166666667 + -0.4166666667 + k = 1.157703666 + -0.4166666667

Combine like terms: 0.4166666667 + -0.4166666667 = 0.0000000000
0.0000000000 + k = 1.157703666 + -0.4166666667
k = 1.157703666 + -0.4166666667

Combine like terms: 1.157703666 + -0.4166666667 = 0.7410369993
k = 0.7410369993

Simplifying
k = 0.7410369993


Subproblem 2
k + 0.4166666667 = -1.157703666

Simplifying
k + 0.4166666667 = -1.157703666

Reorder the terms:
0.4166666667 + k = -1.157703666

Solving
0.4166666667 + k = -1.157703666

Solving for variable 'k'.

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

Add '-0.4166666667' to each side of the equation.
0.4166666667 + -0.4166666667 + k = -1.157703666 + -0.4166666667

Combine like terms: 0.4166666667 + -0.4166666667 = 0.0000000000
0.0000000000 + k = -1.157703666 + -0.4166666667
k = -1.157703666 + -0.4166666667

Combine like terms: -1.157703666 + -0.4166666667 = -1.5743703327
k = -1.5743703327

Simplifying
k = -1.5743703327


Solution
The solution to the problem is based on the solutions
from the subproblems.
k = {0.7410369993, -1.5743703327}

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