6k-j^2+2k divide l

J=5. K=12. L=3

To divide 6k - j^2 + 2k by l, we substitute the given values of j, k, and l:

6(12) - (5^2) + 2(12) ÷ 3

Now let's simplify:

72 - 25 + 24 ÷ 3

72 - 25 + 8

47 + 8

= 55

Therefore, 6k - j^2 + 2k divided by l, when j=5, k=12, and l=3, is equal to 55.