问题
解答题
计算:(
|
答案
(
)-1÷(x2+xy x
•x-y x
)-5x y-x
=[
]-1÷(x(x+y) x
•x-y x
)-5-x x-y
=(x+y)-1•(-1)5
=-1 x+y
计算:(
|
(
)-1÷(x2+xy x
•x-y x
)-5x y-x
=[
]-1÷(x(x+y) x
•x-y x
)-5-x x-y
=(x+y)-1•(-1)5
=-1 x+y