一组数据:3,-1,0,1,3,6的极差是为 .
(x﹣y)2+_______=(x+y)2.
若x2﹣mx+16=(x﹣4)2,那么m=_______.
若a+b=﹣3,ab=2,则a2+b2=_______,(a﹣b)2=_______.
(x+y)2﹣_______=(x﹣y)2.
计算:(2x2y)2÷(﹣4xy2)3=_______.