简便运算 (1+0.18+0.68)*(0.18+0.68+0.88)-(1+0.18+0.68+0.88)*(0.18+0.68)
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/14 03:47:29
![简便运算 (1+0.18+0.68)*(0.18+0.68+0.88)-(1+0.18+0.68+0.88)*(0.18+0.68)](/uploads/image/z/367128-0-8.jpg?t=%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97+%281%2B0.18%2B0.68%29%2A%280.18%2B0.68%2B0.88%29-%281%2B0.18%2B0.68%2B0.88%29%2A%280.18%2B0.68%29)
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简便运算 (1+0.18+0.68)*(0.18+0.68+0.88)-(1+0.18+0.68+0.88)*(0.18+0.68)
简便运算 (1+0.18+0.68)*(0.18+0.68+0.88)-(1+0.18+0.68+0.88)*(0.18+0.68)
简便运算 (1+0.18+0.68)*(0.18+0.68+0.88)-(1+0.18+0.68+0.88)*(0.18+0.68)
令0.18+0.68=A
0.18+0.68+0.88=B
原式=(1+A)*B-(1+B)*A
=B+AB-A-AB
=B-A
=(0.18+0.68+0.88)-(0.18+0.68)
=0.88
楼上的错了!