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1.已知a2-a-1=0 且(2a2-3xa2+2)/(a3+2xa2-a)=-93/112 则x=2.已知实数x,y满足方程（x2=2x=3)(3y2=2y=1)=4/3 则x+y=注：字母后的数字是幂 bears are fuzzy什么意思 she is _years old 文言文中定语由名词充当时的例句 名词在句中做主,宾补,表,定语的例句! 有没有谁给我出道奥数题 我没事干越快越好 The Answer的《On And On》 歌词 I want to go to provence lavender bears watching是什么意思 I love it’s got a dirty mark on the cover. tea怎么读 0,√3,√6,3,2√3,√15,3√2的规律是什么? 英语翻译The button-on-block,pin-on-disk,and button-on-cylindertesting procedures are valuable methods of determining therelative galling resistance of a material couple in area,pointand line contact,respectively 0.5x/30 -0.5x/(30*2)=15/60这个算式什么意思?是关于一元一次方程的! And sixty cents of it was in pennies如何理解in pennies 中的介词in End of You的《End Of You》 歌词 of' you don't Cry me so end Then he gets ____and goes to the bus stop A out B into C through D to Screenshot是什么意思? What 什么意思 medical emergency是什么意思 Most children have all their ''milk" teeth by the time they are two years old.there are 20 teeth . the boy ＿＿ at the bus stop and＿＿his mother.A stand,waits B,stppd,waited for C,stands,wait D,is,waiting The work was difficult untill I ____itA used to B be used to C became used to D use to请说明一下原因 He was not happy____ the resultA.to B.at C.of D.with 我喜欢它们,英语,复数 我喜欢所有的玩具,就不喜欢那只小笨熊.怎样修改 screenshot是什么意思 FAILED TO OPEN SCREENSHOT PICTURE是什么意思 CHAMPG. 求TANK唱的一首歌,歌名是英文的,但歌词是中文的. emergency