>
数学
>
已知x,y是正整数,并且满足条件xy+x+y+1=71,x²y+xy²=880,求x²+y²的值
人气:101 ℃ 时间:2019-11-15 02:18:38
解答
xy+x+y+1=71
(x+1)(y+1)=71=71*1=1*71
不对,重新看题吧不好意思,题错了应为:xy+x+y+1=72x²y+xy²=880,求x²+y²的值
推荐
已知x和y是正整数,且满足xy+x+y=71,x^2+xy^2=880求x^2+y^2的值
已知x和y是正整数,并且满足条件xy+x+y=71,x2y+xy2=880,求x2+y2的值.
已知x、y为正整数 xy+x+y=23 ,x²y+xy²=120,则x²+y²的值是多少?
已知x和y是正整数,并且满足条件xy+x+y=71,x2y+xy2=880,求x2+y2的值.
已知x和y是正整数,并且满足条件xy+x+y=71,x2y+xy2=880,求x2+y2的值.
I did what everyone does who has no idea what to do with themselves when they got out of college and went on to graduate
Tom has over ten books.(改同义句) Tom has ____ ____ ten books.
成语‘狡兔三窟’的来历,请告诉.
猜你喜欢
为什么四大文明古国都产生于各大流域
物质跟氧气发生的化学反应叫氧化反应_.
2011年3月12日是我国的第33个植树节,实验中学七年级1班和2班参加植树节,1班的植
《山居秋暝》翻译
No offense ,but by the time we're in the job market,won't that stuff be outdated?3Q
Does she like swimming?=Does she___________________?
观察下列数,找出规律
中性点不接地,发生单相短路时.
© 2025 79432.Com All Rights Reserved.
电脑版
|
手机版