Lim (9-x)/(3-√x)x- ›9

jawab

lim(x->9)  (9-x)/(3 -√x) 

= lim(x->9) (3 - √x)(3+√x)/ (3 - √x)
= lim (x->9)  (3 + √x)
x = 9 --> 3 + √x =  3+√9
x = 3+3
x = 6