Are you sure you copied that correctly? Why do you bother to write the coefficients "1" ?
Just plug in 2 for x.
r(r^2-x)/(x-3) -> -r(r^2 -2)
evaluate the limit:
Lim as x approaches 2
(1r3 - 1rx) / x-3
1 answer
Lim as x approaches 2
(1r3 - 1rx) / x-3
1 answer