2004.05*1997.05-2001.05*1999.05的简便运算
答案:6 悬赏:50 手机版
解决时间 2021-03-19 21:39
- 提问者网友：且恨且铭记
- 2021-03-19 03:55
2004.05*1997.05-2001.05*1999.05的简便运算
最佳答案
- 五星知识达人网友：往事埋风中
- 2021-03-19 04:47
1989.05
=(2000.55+3.5)×(2000.55-3.5)-(2000.05+1)×(2000.05-1)
=2000.55²-3.5²-(2000.05²-1)
=2000.55²-2000.05²+1-3.5²
=(2000.55+2000.05)(2000.55-2000.05)+1-12.25
=4000.6×0.5-11.25
=2000.3-11.25
=1989.05
- 解析：
=(2000.55+3.5)×(2000.55-3.5)-(2000.05+1)×(2000.05-1)
=2000.55²-3.5²-(2000.05²-1)
=2000.55²-2000.05²+1-3.5²
=(2000.55+2000.05)(2000.55-2000.05)+1-12.25
=4000.6×0.5-11.25
=2000.3-11.25
=1989.05
全部回答
- 1楼网友：像个废品
- 2021-03-19 09:52
2004.05×1997.05－2001.05×1999.05
=(2001.05+3)×1997.05－2001.05×1999.05
=2001.05x1997.05+3x1997.05-2001.05x1999.05
=2001.05x(1997.05-1999.05)+3x(2000-2.95)
=2001.05x-2+3x2000-2.95x3
=-4002.1+6000-(3-0.05)x3
=6000-4000-2.1-9+0.15
=2000.15-11.1
=1989.05
=(2001.05+3)×1997.05－2001.05×1999.05
=2001.05x1997.05+3x1997.05-2001.05x1999.05
=2001.05x(1997.05-1999.05)+3x(2000-2.95)
=2001.05x-2+3x2000-2.95x3
=-4002.1+6000-(3-0.05)x3
=6000-4000-2.1-9+0.15
=2000.15-11.1
=1989.05
- 2楼网友：旧脸谱
- 2021-03-19 08:13
=（2001.05+3）*（1999.05-2）-2001.05*1999.05
=2001.05*1999.05-2*2001.05+3*1999.05-6-2001.05*1999.05
=-2*2001.05+3*1999.05-6
=3（2000-0.95）-4002.1-6
=6000-3*0.95-4008.1
=6000-4000-8.1-3（1-0.05）
=2000-8.1-3+0.15
=2000-3-8.1+0.1+0.05
=2000-3-8+0.05
=1989+0.05
=1989.05
=2001.05*1999.05-2*2001.05+3*1999.05-6-2001.05*1999.05
=-2*2001.05+3*1999.05-6
=3（2000-0.95）-4002.1-6
=6000-3*0.95-4008.1
=6000-4000-8.1-3（1-0.05）
=2000-8.1-3+0.15
=2000-3-8.1+0.1+0.05
=2000-3-8+0.05
=1989+0.05
=1989.05
- 3楼网友：英雄的欲望
- 2021-03-19 07:03
2004.05×1997.05－2001.05×1999.05
=(2001.05+3)×1997.05－2001.05×1999.05
=2001.05x1997.05+3x1997.05-2001.05x1999.05
=2001.05x(1997.05-1999.05)+3x(2000-2.95)
=2001.05x-2+3x2000-2.95x3
=-4002.1+6000-(3-0.05)x3
=6000-4000-2.1-9+0.15
=2000.15-11.1
=1989.05
望采纳~
=(2001.05+3)×1997.05－2001.05×1999.05
=2001.05x1997.05+3x1997.05-2001.05x1999.05
=2001.05x(1997.05-1999.05)+3x(2000-2.95)
=2001.05x-2+3x2000-2.95x3
=-4002.1+6000-(3-0.05)x3
=6000-4000-2.1-9+0.15
=2000.15-11.1
=1989.05
望采纳~
- 4楼网友：野味小生
- 2021-03-19 06:01
原式=2004.05x1997.05-2001.05x1997.05-2001.05x2
=3x1997.05-2001.05x2
=3x1997.05-2x1997.05-2x4
=1997.05-8
=1989.05
=3x1997.05-2001.05x2
=3x1997.05-2x1997.05-2x4
=1997.05-8
=1989.05
- 5楼网友：人间朝暮
- 2021-03-19 05:48
2004.05×1997.05－2001.05×1999.05
=(2001.05+3)×1997.05－2001.05×1999.05
=2001.05x1997.05+3x1997.05-2001.05x1999.05
=2001.05x(1997.05-1999.05)+3x(2000-2.95)
=2001.05x-2+3x2000-2.95x3
=-4002.1+6000-(3-0.05)x3
=6000-4000-2.1-9+0.15
=2000.15-11.1
=1989.05
=(2001.05+3)×1997.05－2001.05×1999.05
=2001.05x1997.05+3x1997.05-2001.05x1999.05
=2001.05x(1997.05-1999.05)+3x(2000-2.95)
=2001.05x-2+3x2000-2.95x3
=-4002.1+6000-(3-0.05)x3
=6000-4000-2.1-9+0.15
=2000.15-11.1
=1989.05
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