A:to speak ill of
B:to be spoken ill of
C:speaking ill of
D:spoken ill of
在直角坐标系中,一条直线经过A(﹣1,5),P(﹣2,a),B(3,﹣3)三点.
已知i是虚数单位,m,n∈R,且m+2i=2﹣ni,则m+nim-ni的共轭复数为____
67÷3 =____ 35×15 =____ 2−37 =____ 1+12%=____ 16+56×15 =____