-k^2+11k-15=3

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Solution for -k^2+11k-15=3 equation:


Simplifying
-1k2 + 11k + -15 = 3

Reorder the terms:
-15 + 11k + -1k2 = 3

Solving
-15 + 11k + -1k2 = 3

Solving for variable 'k'.

Reorder the terms:
-15 + -3 + 11k + -1k2 = 3 + -3

Combine like terms: -15 + -3 = -18
-18 + 11k + -1k2 = 3 + -3

Combine like terms: 3 + -3 = 0
-18 + 11k + -1k2 = 0

Factor a trinomial.
(-9 + k)(2 + -1k) = 0

Subproblem 1

Set the factor '(-9 + k)' equal to zero and attempt to solve: Simplifying -9 + k = 0 Solving -9 + k = 0 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 = 0 + 9 Combine like terms: -9 + 9 = 0 0 + k = 0 + 9 k = 0 + 9 Combine like terms: 0 + 9 = 9 k = 9 Simplifying k = 9

Subproblem 2

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

Solution

k = {9, 2}

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