问题
解答题
计算 (1)
(2)(x2y-
|
答案
(1)原式=2-3+2-
-13
=-
;3
(2)原式=x2y÷
xy-1 2
xy2÷1 2
xy-2xy÷1 2
xy,1 2
=2x-y-4.
计算 (1)
(2)(x2y-
|
(1)原式=2-3+2-
-13
=-
;3
(2)原式=x2y÷
xy-1 2
xy2÷1 2
xy-2xy÷1 2
xy,1 2
=2x-y-4.