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NA2<NA1=NA3 NA2=NA3=NA1 NA1=NA2>NA3 NA2=NA1<NA3
a+a2=2a3 a2•a3=a6 (2a4)4=16a8 (-a)6÷a3=a3
F={A1→A2,A1→A3} F={A1→A2} F={A1→A2} F={A1A3→A2,A1A2→A3}
a1>a3,s1=s3 s1>s3,a1>a3 a1<a3,s1>s3 a1<a3,s1<s3
=(A1+A2+A3)/3 =SUM(A1:A3)/3 =AVERAGE(A1:A3) =AVERAGE(A1:A2:A3)
7+6 A3+E6 =SUM(A3:E6) =SUM(A3,E6)
NA2<NA1=NA3 NA2=NA3=NA1 NA1=NA2>NA3 NA2=NA1<NA3
=A2-C6 =D5+F7 =A3*A4 =A2@D2
=A1+A2+A3/3 =SUM(A1:A3)/3 =AVERAGE(A1:A3) =AVERAGE(A1:A2:A3)
'=(A1+A2+A3)/3 '=SUM(A1:A3)/3 '=AVERAGE(A1:A3) '=AVERAGE(A1:A2:A3)
5a+3a=8a2 (a-b)2=a2-b2 a3•a7=a10 (a3)2=a7