a/b=a÷_____=a · _____=_____ · a=_____÷a
a little Chinese = _____ _____ _____ of Chi
once a week=_____ _____ a month
当a=-5,b=-3又3/1时,(1)a-b=_____.(2)-a-b=_____.(3)-a-(-b)=_____.
英语翻译填空:____ _____ we _____ _____ _____ a _____
一道数学题:已知:3a-b/3=2a+c/5=2b+c/7,则a:b:c=_____:_____:_____
已知27的A次方=3的2A+3次方,则A=_____?
Can you ride a bike now?= _____ you _____ _____ ride a bike
live as a family=live ____ _____ _____
已知向量a=(1,1),a·b=3,|a+b|=根号13,则|a|=_____ |b|=_____
已知f(x)=ax^2+bx+3a+b是偶函数,且定义域为[a-1,2a],则a=_____,b=_____?(^2 表
若矩阵A满足A^2-3A+2E=0(*)则A的特征值有_____