k^2-20k+39=3

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Solution for k^2-20k+39=3 equation:


Simplifying
k2 + -20k + 39 = 3

Reorder the terms:
39 + -20k + k2 = 3

Solving
39 + -20k + k2 = 3

Solving for variable 'k'.

Reorder the terms:
39 + -3 + -20k + k2 = 3 + -3

Combine like terms: 39 + -3 = 36
36 + -20k + k2 = 3 + -3

Combine like terms: 3 + -3 = 0
36 + -20k + k2 = 0

Factor a trinomial.
(2 + -1k)(18 + -1k) = 0

Subproblem 1

Set the factor '(2 + -1k)' equal to zero and attempt to solve: Simplifying 2 + -1k = 0 Solving 2 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1k = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1k = 0 + -2 -1k = 0 + -2 Combine like terms: 0 + -2 = -2 -1k = -2 Divide each side by '-1'. k = 2 Simplifying k = 2

Subproblem 2

Set the factor '(18 + -1k)' equal to zero and attempt to solve: Simplifying 18 + -1k = 0 Solving 18 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '-18' to each side of the equation. 18 + -18 + -1k = 0 + -18 Combine like terms: 18 + -18 = 0 0 + -1k = 0 + -18 -1k = 0 + -18 Combine like terms: 0 + -18 = -18 -1k = -18 Divide each side by '-1'. k = 18 Simplifying k = 18

Solution

k = {2, 18}

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