6k-j^2+2k divide l
J=5. K=12. L=3
To find the value of the expression (6k - j^2 + 2k)/l when J=5, K=12, and L=3, substitute the given values into the expression:
(6k - j^2 + 2k)/l
(6(12) - (5)^2 + 2(12))/3
(72 - 25 + 24)/3
71/3
Therefore, when J=5, K=12, and L=3, the value of the expression (6k - j^2 + 2k)/l is 71/3.