2k^2-19k+10=0

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Solution for 2k^2-19k+10=0 equation:


Simplifying
2k2 + -19k + 10 = 0

Reorder the terms:
10 + -19k + 2k2 = 0

Solving
10 + -19k + 2k2 = 0

Solving for variable 'k'.

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

Divide each side by '2'.
5 + -9.5k + k2 = 0

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + -9.5k + -5 + k2 = 0 + -5

Reorder the terms:
5 + -5 + -9.5k + k2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -9.5k + k2 = 0 + -5
-9.5k + k2 = 0 + -5

Combine like terms: 0 + -5 = -5
-9.5k + k2 = -5

The k term is -9.5k.  Take half its coefficient (-4.75).
Square it (22.5625) and add it to both sides.

Add '22.5625' to each side of the equation.
-9.5k + 22.5625 + k2 = -5 + 22.5625

Reorder the terms:
22.5625 + -9.5k + k2 = -5 + 22.5625

Combine like terms: -5 + 22.5625 = 17.5625
22.5625 + -9.5k + k2 = 17.5625

Factor a perfect square on the left side:
(k + -4.75)(k + -4.75) = 17.5625

Calculate the square root of the right side: 4.190763654

Break this problem into two subproblems by setting 
(k + -4.75) equal to 4.190763654 and -4.190763654.

Subproblem 1

k + -4.75 = 4.190763654 Simplifying k + -4.75 = 4.190763654 Reorder the terms: -4.75 + k = 4.190763654 Solving -4.75 + k = 4.190763654 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '4.75' to each side of the equation. -4.75 + 4.75 + k = 4.190763654 + 4.75 Combine like terms: -4.75 + 4.75 = 0.00 0.00 + k = 4.190763654 + 4.75 k = 4.190763654 + 4.75 Combine like terms: 4.190763654 + 4.75 = 8.940763654 k = 8.940763654 Simplifying k = 8.940763654

Subproblem 2

k + -4.75 = -4.190763654 Simplifying k + -4.75 = -4.190763654 Reorder the terms: -4.75 + k = -4.190763654 Solving -4.75 + k = -4.190763654 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '4.75' to each side of the equation. -4.75 + 4.75 + k = -4.190763654 + 4.75 Combine like terms: -4.75 + 4.75 = 0.00 0.00 + k = -4.190763654 + 4.75 k = -4.190763654 + 4.75 Combine like terms: -4.190763654 + 4.75 = 0.559236346 k = 0.559236346 Simplifying k = 0.559236346

Solution

The solution to the problem is based on the solutions from the subproblems. k = {8.940763654, 0.559236346}

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