Witaj :)
Odpowiedź:
a) 1/a +1+2/a
=a/a(a+1)+2(a+1)/a(a+1)
=a+2 a+2/a²+a
b) 1/a+1-1/a+2
=a+2/(a+1)(a+2)-a+1/(a+1)(a+2)
=a+2-(a+1)/(a+1)(a+2)
c) 2p-1/2p+1-1/2p
=2p(2p-1)/2p(2p+1)-2p+1/2p(2p+1)
d) 6k(1-k)/(3k-1)(1-k)+2k(3k-1)/(3k-1)(1-k)
=4k/(3k-1)(1-k)
Niestety nie mam jak tego na kartce :(
