2.39. Oblicz granice:

a) lim x+1 *+-1* x² -2x² +1

3-2x

c) lim

b) lim x+1 *→-1 x² – 2x² +1

3-2x

x-+2x²³-8x² +20x-16 8-2x

d) lim x-2x³-8x² +20x-16

e) lim x-4x²³-12x² +48x-64

f) lim 8-2x x+4 x³-12x² +48x-64