Odpowiedzi

2010-04-08T13:51:46+02:00
(6a²+2a+1)-(-3a²-2a+5)=6a²+2a+1+3a²+2a-5=9a²+4a-4
B)12½m-1¼n²-1.6)-(2¼m²+3¾n²+2.4)=25/2m²-5/4n²-1.6-9/4m²+15/4n²-2,4=41/4m²+10/4n²-3=10¼m²+2½n²-3
C)(1,5x²y-¾x²-15)-(⅖x²y-2⅔-⅛x²)=1½x²y-¾x²-15-⅖x²y-8/3-⅛x²=3/2x²y-¾x²-15-⅖x²y-8/3-⅛x²=11/10x²y-7/8x²-17⅔