k^2+72=33k

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Solution for k^2+72=33k equation:


Simplifying
k2 + 72 = 33k

Reorder the terms:
72 + k2 = 33k

Solving
72 + k2 = 33k

Solving for variable 'k'.

Reorder the terms:
72 + -33k + k2 = 33k + -33k

Combine like terms: 33k + -33k = 0
72 + -33k + k2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-72' to each side of the equation.
72 + -33k + -72 + k2 = 0 + -72

Reorder the terms:
72 + -72 + -33k + k2 = 0 + -72

Combine like terms: 72 + -72 = 0
0 + -33k + k2 = 0 + -72
-33k + k2 = 0 + -72

Combine like terms: 0 + -72 = -72
-33k + k2 = -72

The k term is -33k.  Take half its coefficient (-16.5).
Square it (272.25) and add it to both sides.

Add '272.25' to each side of the equation.
-33k + 272.25 + k2 = -72 + 272.25

Reorder the terms:
272.25 + -33k + k2 = -72 + 272.25

Combine like terms: -72 + 272.25 = 200.25
272.25 + -33k + k2 = 200.25

Factor a perfect square on the left side:
(k + -16.5)(k + -16.5) = 200.25

Calculate the square root of the right side: 14.150971698

Break this problem into two subproblems by setting 
(k + -16.5) equal to 14.150971698 and -14.150971698.

Subproblem 1

k + -16.5 = 14.150971698 Simplifying k + -16.5 = 14.150971698 Reorder the terms: -16.5 + k = 14.150971698 Solving -16.5 + k = 14.150971698 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '16.5' to each side of the equation. -16.5 + 16.5 + k = 14.150971698 + 16.5 Combine like terms: -16.5 + 16.5 = 0.0 0.0 + k = 14.150971698 + 16.5 k = 14.150971698 + 16.5 Combine like terms: 14.150971698 + 16.5 = 30.650971698 k = 30.650971698 Simplifying k = 30.650971698

Subproblem 2

k + -16.5 = -14.150971698 Simplifying k + -16.5 = -14.150971698 Reorder the terms: -16.5 + k = -14.150971698 Solving -16.5 + k = -14.150971698 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '16.5' to each side of the equation. -16.5 + 16.5 + k = -14.150971698 + 16.5 Combine like terms: -16.5 + 16.5 = 0.0 0.0 + k = -14.150971698 + 16.5 k = -14.150971698 + 16.5 Combine like terms: -14.150971698 + 16.5 = 2.349028302 k = 2.349028302 Simplifying k = 2.349028302

Solution

The solution to the problem is based on the solutions from the subproblems. k = {30.650971698, 2.349028302}

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