问题
解答题
(
|
答案
(
x2 3
+6x9x
)-(x2y x
-y1 x
）y x
=2x
+6x
-xxy
+x y xy x
=x
+x 6x+y x
．xy
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(
|
(
x2 3
+6x9x
)-(x2y x
-y1 x
）y x
=2x
+6x
-xxy
+x y xy x
=x
+x 6x+y x
．xy