-k^2+7k-12=0

Solution for -k^2+7k-12=0 equation:

Simplifying
-1k2 + 7k + -12 = 0

Reorder the terms:
-12 + 7k + -1k2 = 0

Solving
-12 + 7k + -1k2 = 0

Solving for variable 'k'.

Factor a trinomial.
(-4 + k)(3 + -1k) = 0

Subproblem 1
Set the factor '(-4 + k)' equal to zero and attempt to solve:

Simplifying
-4 + k = 0

Solving
-4 + k = 0

Move all terms containing k to the left, all other terms to the right.

Add '4' to each side of the equation.
-4 + 4 + k = 0 + 4

Combine like terms: -4 + 4 = 0
0 + k = 0 + 4
k = 0 + 4

Combine like terms: 0 + 4 = 4
k = 4

Simplifying
k = 4
Subproblem 2
Set the factor '(3 + -1k)' equal to zero and attempt to solve:

Simplifying
3 + -1k = 0

Solving
3 + -1k = 0

Move all terms containing k to the left, all other terms to the right.

Add '-3' to each side of the equation.
3 + -3 + -1k = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1k = 0 + -3
-1k = 0 + -3

Combine like terms: 0 + -3 = -3
-1k = -3

Divide each side by '-1'.
k = 3

Simplifying
k = 3
Solution
k = {4, 3}