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a+a2=2a3 a2•a3=a6 (2a4)4=16a8 (-a)6÷a3=a3
=A3(1+B3) =A3*(1+B3) A3*(1+B3) =A3+A3B3
(a-b)2=a2-b2 (-a2)3= -a6 x2+x2=x4 3a3·2a2=6a6 。
A3=Ac3=Ar3 Ac3>A3>Ar3 Ac3
“SUM(A3:F9)” =MAX(F9,A3) =AVERAGE(F9:A3) =A3%
=A3(1+B3) =A3*(1+B3) A3*(1+B3) =A3+A3B3
=(A1+A2+A3)/3 =SUM(A1:A3)/3 =AVERAGE(A1:A3) =AVERAGE(A1:A2:A3)
=Al+A3 =MAX(A1:A3) =SUM(A1:A3) =MIN(A1:A3)
A1>A3>Acm A1<Acm<A3 A3>A1;Acm>A1 Acm>A3>A1
=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