呜呜呜呜呜呜呜呜呜呜.
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/20 01:44:45
呜呜呜呜呜呜呜呜呜呜.
![](http://img.wesiedu.com/upload/5/19/51919f7e5d7e67544083d8a2f3fee1d4.jpg)
![](http://img.wesiedu.com/upload/5/19/51919f7e5d7e67544083d8a2f3fee1d4.jpg)
![呜呜呜呜呜呜呜呜呜呜.](/uploads/image/z/16486113-57-3.jpg?t=%E5%91%9C%E5%91%9C%E5%91%9C%E5%91%9C%E5%91%9C%E5%91%9C%E5%91%9C%E5%91%9C%E5%91%9C%E5%91%9C.)
原理都是一样的
找到公共因子a
ab+ac=a(b+c)
1,
原式
=9* 981/100*0.1+0.5*981/10+0.049*981
=981*(0.9+0.05+0.049)
=981*0.999=981-0.000981=980.019
2.
原式
= (18*5+4)*(32/25) +(8*25+3)*2*(32/25)
=(94+203*2)*(32/25)
=500*32/25
=20*32
=640
找到公共因子a
ab+ac=a(b+c)
1,
原式
=9* 981/100*0.1+0.5*981/10+0.049*981
=981*(0.9+0.05+0.049)
=981*0.999=981-0.000981=980.019
2.
原式
= (18*5+4)*(32/25) +(8*25+3)*2*(32/25)
=(94+203*2)*(32/25)
=500*32/25
=20*32
=640
呜呜
呜呜呜呜呜呜呜呜呜呜
呜呜呜呜
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呜呜呜呜呜呜呜呜呜呜呜呜呜呜呜呜呜呜呜呜呜呜呜呜
呜呜呜呜呜呜
呜呜呜呜呜呜
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