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计算:(a+2)(a2+4)(a-2);

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=SUM(Sheet2! A2:A7)  =SUM(Sheet2! A2:Sheet2! A7)  =SUM((Sheet2)A2:A7)  =SUM((Sheet2)A2:(Sheet2)A7)  
V=6/H(A1+ 4A0 +A2)  V=4/H(A1+A0 +A2)  V=6/H(A 1+A 0 +A2)  V=4/H(A 1+ 4A0 +A2)  
βA2=10°~20°  βA2=15°~30°  βA2=25°~40°  βA2=30°~60°  
=SUM(Sheet2!A2:A7)  =SUM(Sheet2!A2:Sheet2!A7)  =SUM((Sheet2)A2:A7)  =SUM((Sheet2)A2:(Sheet2)A7)  
βA2=15°~20°  βA2=15°~30°  βA2=25°~40°  βA2=30°~60°  
=SUM(A2:A5)  =SUMIF(A2:A5,800,B2:B5)  =COUNTIF(A2:A5,800)  =SUM(B2:B5,800,A2:A5)  
=AVERAGE(A2:H2)  =SUM(A2:H2)  =SUM(A2:H2)-MAX(A2:H2)-MIN(A2:H2)  =(SUM(A2:H2)-MAX(A2:H2)-MIN(A2:H2))/(COUNT(A2:H2)-2)  
SUM(A2:A6)  A2+A3+A4+A5+A6  =SUM(A2:A6)  =SUM(A2,A6)  
count(A2、K2,“√”)  count(A2,K2)  countif(A2、K2,“√”)  countif(“√”,A2、K2)  
a1,a2=0  a1=0,a2=0  store0toa1,a2  store0,0toa1,a2  
A1,A2,A3=10  SET 10 TO A1,A2,A3  LOCAL 10 TO A1,A2,A3  STORE 10 TO A1,A2,A3  
如果A1=90、A2=人数、A3=…""、A4=54、A5=36,则公式"=Count(A1:A5)"返回5  如果A1=6.28、A2=3.74,其余单元格为空,则公式"=Counta(A1:A7)"的计算结果等于2  如果A1=90、A2=人数、A3=""、A4=54、A5=36,则公式"=Count(A1:A5)"返回3  如果A1=6.28、A2=3.74,其余单元格为空,则公式"=Counta(A1:A7)"的计算结果等于3