问题
解答题
|
答案
+1
-3 2
-1
+12 2
+13
=
+
-3 2 (
+3
)(2
-3
)2
-
-12 (
+1)(2
-1)2 2(
-1)3 (
+1)(3
-1)3
=
-3
+2
-1-（2
-1）3
=0．
搜题请搜索小程序“爱下问搜题”
|
+1
-3 2
-1
+12 2
+13
=
+
-3 2 (
+3
)(2
-3
)2
-
-12 (
+1)(2
-1)2 2(
-1)3 (
+1)(3
-1)3
=
-3
+2
-1-（2
-1）3
=0．