问题
解答题
计算 ①
②
|
答案
(1)原式=3
-33
-25
+55 3
=8
-53
;5
(2)原式=
×(-1 3
)×6×1 4 x2y•
•y2 x 1 x2y
=-1 2 y2x x2
=-y 2x
.x
计算 ①
②
|
(1)原式=3
-33
-25
+55 3
=8
-53
;5
(2)原式=
×(-1 3
)×6×1 4 x2y•
•y2 x 1 x2y
=-1 2 y2x x2
=-y 2x
.x