问几道奥术题1.若a+b=10,a³+b³=100,则a²+b²的值是多少 2,.设m,n是自然数,并且19n²-98n-m=0,则m+n的最小值是什么3.满足方程x³+6x²+5x=27y³+9y²+9y+1的正整数对（x,y）有多少对

Where Su Hai and Su Yang yesteWhere Su Hai and Su Yang yesterday afternoon?A.was B.are c.were选什么 Hi,so A de su is su hai () table tennis () su yang?A play with B playing and C playing with 如果选C 为什么 已知a+b=6,ab=-7,求 [（a-b)(a²+ab+b²）/（3ab）]/[（a²+ab-2b²)/(a²+3ab-2b&su ( )2 Su Hai and Su Yang’s school has a every year.A Sports Day B sports day C sport day 七年级数学寒假作业一、填空题.1.已知a,b互为相反数,c,d互为倒数,x的绝对值为3,求：（1）a+b=______；cd=______；x=______；（2）求（a+b）的2005次幂+3cd—x²的值2.若a,b表示有理数,且满足（a+b）&su Su Hao wants to take_____.A some photoes B some photos C any photos Su Hai ( ) late for school.A.always is B.alwsys C.is always Su Yang/A often/B call me/C in the evening/D 甲乙同学在讨论数学问题,甲说：“若有a²＞b²则一定有a＞b”乙说：“若有a＞b则有a²＞b&su these wallets are su hai and su yang's.please give ----to---- a.them; them b.them;they c.it;them Are you look the same,su hai and su yang 改错(a是Are,b是you,c是look the same,d是and) --------Su Hai and Su Yang like growing flowers?Yes.They havethe same hobby.A Do B Does C Are5分钟之内回答, Su yang and Su Hai have _____to do every eveninga many homework B a lots of homework C much homework急 both 的用法Su Hai and Su Yang are students.A.all B.both c.two我不知选哪个答案.为什么选这个答案呢? 选择su hai and su yang __a birthday party .They ___ many freinds.A.have;have B.had;have C.had;had这个选择题该怎么选 几道初二的填空题（很简单)1.等腰梯形上底为6厘米,下底为8厘米,高为根号3厘米,则腰长为（ ）2.等腰梯形的锐角是60度,它的两底分别是15厘米、49厘米,则腰长=（ ）3.若（a+b）²=17,（a-b）&su 英语翻译[...] pero si sus piernas flaqueaban,si su cabeza no le mantuviese firmen en su sendero,si su corazón empezaba a bambolear y enflaquecer,¿quién la sostendría a ella?,¿quién sería su báculo?(Unamuno,La tía Tula,80).