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b) a kwadrat (3 + a)
c) 3 (a kwadrat + 1/3 a do trzeciej)
d) 3a kwadrat (1 + 1/3 a kwadrat)
a) a(3a+a²)
b)a²(3+a)
c) 3(a²+⅓a³)
d)3a²(a³)
b)a²(3+a)
c)3(a²+1/3a³)
d)3a²(1+1/3a²)