You mean????
[(14+y)^2 - 14^2 ] / y ????
if so
[ (14+y-14)(1+y+14)] / y
y (y+15)/ y
y+15
as y--->0
15
lim (squar(14+y)-squar(14))/y
y->0
Find limit if there is one.
2 answers
multipy the lim by sqrt(14+y)+sqrt14/same
lim (14+y - 14) /y(sqrt(14+y)+sqrt14))
y/y2sqrt14 =1/2sqrt14
lim (14+y - 14) /y(sqrt(14+y)+sqrt14))
y/y2sqrt14 =1/2sqrt14