【简答题】Oh God, it ’ s Monday! “ Oh, God, it ’ s Monday! ” How many millions say that to themselves when they wake to the unwelcome realization that it ’ s the start of another working week. From the day we l...
【简答题】计算: (1) (- 2 3 x 7 y 5 )÷(-3 x 2 y ) 2 ; (2) ( 2 9 x 2 y-4x y 2 -5 x 2 y 2 )÷( 2 3 xy) ; (3) 3 a 2 x 3 ÷( 1 3 ax)?(-4 a 5 x 3 )÷(6 a 2 x 5 ) ; (4)(9x 4 y 5 -1.5x 3 y 4 )÷(-3xy 2 ) 2 .
【简答题】Oh God, it ’ s Monday! “ Oh, God, it ’ s Monday! ” How many millions say that to themselves when they wake to the unwelcome realization that it ’ s the start of another working week. From the day we l...