3k^2+11=18k

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Solution for 3k^2+11=18k equation:


Simplifying
3k2 + 11 = 18k

Reorder the terms:
11 + 3k2 = 18k

Solving
11 + 3k2 = 18k

Solving for variable 'k'.

Reorder the terms:
11 + -18k + 3k2 = 18k + -18k

Combine like terms: 18k + -18k = 0
11 + -18k + 3k2 = 0

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

Divide each side by '3'.
3.666666667 + -6k + k2 = 0

Move the constant term to the right:

Add '-3.666666667' to each side of the equation.
3.666666667 + -6k + -3.666666667 + k2 = 0 + -3.666666667

Reorder the terms:
3.666666667 + -3.666666667 + -6k + k2 = 0 + -3.666666667

Combine like terms: 3.666666667 + -3.666666667 = 0.000000000
0.000000000 + -6k + k2 = 0 + -3.666666667
-6k + k2 = 0 + -3.666666667

Combine like terms: 0 + -3.666666667 = -3.666666667
-6k + k2 = -3.666666667

The k term is -6k.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6k + 9 + k2 = -3.666666667 + 9

Reorder the terms:
9 + -6k + k2 = -3.666666667 + 9

Combine like terms: -3.666666667 + 9 = 5.333333333
9 + -6k + k2 = 5.333333333

Factor a perfect square on the left side:
(k + -3)(k + -3) = 5.333333333

Calculate the square root of the right side: 2.309401077

Break this problem into two subproblems by setting 
(k + -3) equal to 2.309401077 and -2.309401077.

Subproblem 1

k + -3 = 2.309401077 Simplifying k + -3 = 2.309401077 Reorder the terms: -3 + k = 2.309401077 Solving -3 + k = 2.309401077 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + k = 2.309401077 + 3 Combine like terms: -3 + 3 = 0 0 + k = 2.309401077 + 3 k = 2.309401077 + 3 Combine like terms: 2.309401077 + 3 = 5.309401077 k = 5.309401077 Simplifying k = 5.309401077

Subproblem 2

k + -3 = -2.309401077 Simplifying k + -3 = -2.309401077 Reorder the terms: -3 + k = -2.309401077 Solving -3 + k = -2.309401077 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + k = -2.309401077 + 3 Combine like terms: -3 + 3 = 0 0 + k = -2.309401077 + 3 k = -2.309401077 + 3 Combine like terms: -2.309401077 + 3 = 0.690598923 k = 0.690598923 Simplifying k = 0.690598923

Solution

The solution to the problem is based on the solutions from the subproblems. k = {5.309401077, 0.690598923}

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