k^2-18k+35=0

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Solution for k^2-18k+35=0 equation:


Simplifying
k2 + -18k + 35 = 0

Reorder the terms:
35 + -18k + k2 = 0

Solving
35 + -18k + k2 = 0

Solving for variable 'k'.

Begin completing the square.

Move the constant term to the right:

Add '-35' to each side of the equation.
35 + -18k + -35 + k2 = 0 + -35

Reorder the terms:
35 + -35 + -18k + k2 = 0 + -35

Combine like terms: 35 + -35 = 0
0 + -18k + k2 = 0 + -35
-18k + k2 = 0 + -35

Combine like terms: 0 + -35 = -35
-18k + k2 = -35

The k term is -18k.  Take half its coefficient (-9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
-18k + 81 + k2 = -35 + 81

Reorder the terms:
81 + -18k + k2 = -35 + 81

Combine like terms: -35 + 81 = 46
81 + -18k + k2 = 46

Factor a perfect square on the left side:
(k + -9)(k + -9) = 46

Calculate the square root of the right side: 6.782329983

Break this problem into two subproblems by setting 
(k + -9) equal to 6.782329983 and -6.782329983.

Subproblem 1

k + -9 = 6.782329983 Simplifying k + -9 = 6.782329983 Reorder the terms: -9 + k = 6.782329983 Solving -9 + k = 6.782329983 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + k = 6.782329983 + 9 Combine like terms: -9 + 9 = 0 0 + k = 6.782329983 + 9 k = 6.782329983 + 9 Combine like terms: 6.782329983 + 9 = 15.782329983 k = 15.782329983 Simplifying k = 15.782329983

Subproblem 2

k + -9 = -6.782329983 Simplifying k + -9 = -6.782329983 Reorder the terms: -9 + k = -6.782329983 Solving -9 + k = -6.782329983 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + k = -6.782329983 + 9 Combine like terms: -9 + 9 = 0 0 + k = -6.782329983 + 9 k = -6.782329983 + 9 Combine like terms: -6.782329983 + 9 = 2.217670017 k = 2.217670017 Simplifying k = 2.217670017

Solution

The solution to the problem is based on the solutions from the subproblems. k = {15.782329983, 2.217670017}

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