下列式子成立的是( )
A:(2a﹣1)2=4a2﹣1
B:(a+3b)2=a2+9b2
C:(a+b)(﹣a﹣b)=a2﹣b2
D:(﹣a﹣b)2=a2+2ab+b2
The students all well ____ (prepare) for the coming exams, so they all believe that they can easily pass them.
____ plates
Do you like apples?
若分式x-1x+2的值为0,则( )。