Determine the limit, if it exists.
lim_(x->7)(x^(2)-4x-21)/(x-7)
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. lim_(x->7)(x^(2)-4x-21)/(x-7)=
(Simplify your answer.)
B. The limit does not exist.
Determine the limit,if it exists
2-4x-21 lim x-7 X-7
Select the correct choice below and, if necessary, fill in the answer box to complete your choice
OA. x2-4x-21 lim X-7 (Simplify your answer.)
O B. The limit does not exist.