`lim_(x-> 3) ((x^4 -81)/(x-3))` = ?

If lim_(x to 1) (x^(3) - 1)/(x - 1) = lim_(x to k) (x^(4) - k^(4))/(x^(3) - k^(3)) , find the value of k.

lim_(x rarr4)((x^(3//2)-8)/(x-4)) =

Evaluate the following limit: (lim)_(x rarr3)(x^(4)-81)/(x^(2)-9)

Evaluate lim_(x to 3) (x^(7) - 2187)/(x - 81)

Evaluate, lim_(x to 2) (x^(3) - 8)/(x^(2) - 4)

lim_ (x rarr (1) / (2)) ((x ^ (4) -81) / (x-3))

lim_(x rarr4)(sin(x-1))/(x^(3)-1)

lim_(x rarr3)(x^(4)-81)/(2x^(2)-5x-3)

lim_(xrarr3) (x^(4)-81)/(2x^(2)-5x- 3)