(1/8+1/24+1/48+1/80+1/120+1/168+1/224+1/228)*128 第二题:2005个9*2005个9+1 2005个9
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(1/8+1/24+1/48+1/80+1/120+1/168+1/224+1/228)*128第二题:2005个9*2005个9+12005个9(1/8+1/24+1/48+1/80+1/120+1
(1/8+1/24+1/48+1/80+1/120+1/168+1/224+1/228)*128 第二题:2005个9*2005个9+1 2005个9
(1/8+1/24+1/48+1/80+1/120+1/168+1/224+1/228)*128 第二题:2005个9*2005个9+1 2005个9
(1/8+1/24+1/48+1/80+1/120+1/168+1/224+1/228)*128 第二题:2005个9*2005个9+1 2005个9
(1/8+1/24+1/48+1/80+1/120+1/168+1/224+1/288)*128
=[1/8+1/2(1/4-1/6+1/6-1/8+1/8-1/10+1/10-1/12+1/12-1/14+1/14-1/16+1/16-1/18)]*128
=[1/8+1/2*(1/4-1/18)]*128
=128*1/8+128*1/2*1/4-128*1/2*1/18
=16+16-32/9
=32又9分之8
1/8+1/24+1/48+1/80
1/8+1/24+1/48+1/80简便计算
(1/8+1/24+1/48+1/80+1/120+1/168+1/224)*64=
(1/8+1/24+1/48+1/80+1/120+1/168+1/224)乘64
(1/8+1/24+1/48+1/80+1/120+1/168)简便计算
(1/8+1/24+1/48+1/80+1/120+1/168)乘以56
(8/1+24/1+48/1+80/1+120//1+168/1)*42
1/8+1/24+1/48+1/80+1/120+1/168
(1/8+1/24+1/48+1/80+1/120+1/168)*56
42x(8/1+24/1+48/1+80/1+120/1+168/1)=?求求
42X(1/8+1/24+1/48+1/80+1/120+1/168)求解
8分之1+24分之1+48分之1+80分之1+120分之1=?
8/1+24/1+48/1+80/1+120/1要过程
1/8+1/24+1/48+1/80+.+1/360 =
1/8+1/24+1/48+1/80……+1/2400=?
1/2+1/8+1/24+1/48+1/80要简便哦
1/2 +1/8+1/24+1/48+1/80怎么做
1/3+1/8+1/15+1/24+1/35+1/48+1/63+1/80+1/99怎么求