如果a+b+c=___{-a__[-b__(+c)]},那么等号右边的三条横线上所填符号应为

如果a+b+c=___{-a__[-b__(+c)]},那么等号右边的三条横线上所填符号应为 选择填空：What's that?___ It's a__.a.bread b.milk c.carrot. 用适当的符号填空:a__{a} ; a__{a,b,c} ; d__{a,b,c} b_ _l A ai B la C ol 选那个? Henry lives in a tall b_?___ mathematica guide book上的问题书上programming chapter 3中有个模拟Expand的函数:secondExpandAttempt[secondExpandAttempt[a_ (b_ + c_)]] := secondExpandAttempt[a (b + c)]secondExpandAttempt[a_ (b_ + c_)] := a b + a csecondExpandAttempt[a_ + 在△ABC中,a、b、c为三边的长,且有a(a-b_=c(c-b),那么三角形ABC形状是. ( )b_ _e A.a n B.i n C.e n D.o n补充单词 当a__时,√4a²+9有最小值是__.当a__时,√64=5a²有最大值是___ what you smell?A__.It's not nice A lemon B cakes C fish选哪个 The waiter usually works in a__.A public garder B shop C restaurant D private house 集合a__{a b c} 与 {a}__{a b c}有什么不一样吗?横线上填什么~ (2a-1)2+|7-3b|=0,则a=_,b_ 如图,正方形卡片A类,B类,和长方形C类,如果要拼一个边长为（a+2b)的大正方形,则需A_张,B_张,C_张 ①山脉：A ___ B ___ C ___ D ___ ①山脉：A ___ B ___ C ___ D ___ 英语填字母b_ _utiful A.e,a B.a,i C.a,ep_ _ents A.e,r B.i,n C.a,r if you have a toothache you should see a__ a; policeman b;teacher c;dentist d;nurse