9k^2+29k+8=0

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Solution for 9k^2+29k+8=0 equation:


Simplifying
9k2 + 29k + 8 = 0

Reorder the terms:
8 + 29k + 9k2 = 0

Solving
8 + 29k + 9k2 = 0

Solving for variable 'k'.

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

Divide each side by '9'.
0.8888888889 + 3.222222222k + k2 = 0

Move the constant term to the right:

Add '-0.8888888889' to each side of the equation.
0.8888888889 + 3.222222222k + -0.8888888889 + k2 = 0 + -0.8888888889

Reorder the terms:
0.8888888889 + -0.8888888889 + 3.222222222k + k2 = 0 + -0.8888888889

Combine like terms: 0.8888888889 + -0.8888888889 = 0.0000000000
0.0000000000 + 3.222222222k + k2 = 0 + -0.8888888889
3.222222222k + k2 = 0 + -0.8888888889

Combine like terms: 0 + -0.8888888889 = -0.8888888889
3.222222222k + k2 = -0.8888888889

The k term is 3.222222222k.  Take half its coefficient (1.611111111).
Square it (2.595679012) and add it to both sides.

Add '2.595679012' to each side of the equation.
3.222222222k + 2.595679012 + k2 = -0.8888888889 + 2.595679012

Reorder the terms:
2.595679012 + 3.222222222k + k2 = -0.8888888889 + 2.595679012

Combine like terms: -0.8888888889 + 2.595679012 = 1.7067901231
2.595679012 + 3.222222222k + k2 = 1.7067901231

Factor a perfect square on the left side:
(k + 1.611111111)(k + 1.611111111) = 1.7067901231

Calculate the square root of the right side: 1.306441779

Break this problem into two subproblems by setting 
(k + 1.611111111) equal to 1.306441779 and -1.306441779.

Subproblem 1

k + 1.611111111 = 1.306441779 Simplifying k + 1.611111111 = 1.306441779 Reorder the terms: 1.611111111 + k = 1.306441779 Solving 1.611111111 + k = 1.306441779 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-1.611111111' to each side of the equation. 1.611111111 + -1.611111111 + k = 1.306441779 + -1.611111111 Combine like terms: 1.611111111 + -1.611111111 = 0.000000000 0.000000000 + k = 1.306441779 + -1.611111111 k = 1.306441779 + -1.611111111 Combine like terms: 1.306441779 + -1.611111111 = -0.304669332 k = -0.304669332 Simplifying k = -0.304669332

Subproblem 2

k + 1.611111111 = -1.306441779 Simplifying k + 1.611111111 = -1.306441779 Reorder the terms: 1.611111111 + k = -1.306441779 Solving 1.611111111 + k = -1.306441779 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-1.611111111' to each side of the equation. 1.611111111 + -1.611111111 + k = -1.306441779 + -1.611111111 Combine like terms: 1.611111111 + -1.611111111 = 0.000000000 0.000000000 + k = -1.306441779 + -1.611111111 k = -1.306441779 + -1.611111111 Combine like terms: -1.306441779 + -1.611111111 = -2.91755289 k = -2.91755289 Simplifying k = -2.91755289

Solution

The solution to the problem is based on the solutions from the subproblems. k = {-0.304669332, -2.91755289}

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