Odpowiedzi

2010-01-20T17:09:09+01:00
A) 2a-3b+4c²-7a+12b+3b-c²+a =-4a+12b+3c²


d)-3abc³+2ba²c-6c³ab-4a²bc+abc²=-8abc³-2a²bc
2010-01-20T17:14:27+01:00
A)=-4a+12b+3c²
b)1,5abc+2i2/3bac-6,5cba-12 i 1/2
c)=7,8xy²-0,2x²y+12
d)=-8abc³-2a²bc