简算0.1996*0.19971997-0.1997*0.1997急用
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![简算0.1996*0.19971997-0.1997*0.1997急用](/uploads/image/z/1731532-4-2.jpg?t=%E7%AE%80%E7%AE%970.1996%2A0.19971997-0.1997%2A0.1997%E6%80%A5%E7%94%A8)
简算0.1996*0.19971997-0.1997*0.1997急用
简算0.1996*0.19971997-0.1997*0.1997
急用
简算0.1996*0.19971997-0.1997*0.1997急用
(0.1997-1)*0.19971997-0.1997*0.1997
=0.1997*0.19971997-0.19971997-0.1997*0.1997
=(0.19971997-0.1997)*0.1997-0.19971997
=(0.00001997)*0.1997-0.19971997