问题
选择题
计算：
|
答案
原式=
+1 m+3 6 (m+3)(m-3)
=
+m-3 (m+3)(m-3) 6 (m+3)(m-3)
=m-3+6 (m+3)(m-3)
=m+3 (m+3)(m-3)
=
．1 m-3
故选A．
搜题请搜索小程序“爱下问搜题”
计算：
|
原式=
+1 m+3 6 (m+3)(m-3)
=
+m-3 (m+3)(m-3) 6 (m+3)(m-3)
=m-3+6 (m+3)(m-3)
=m+3 (m+3)(m-3)
=
．1 m-3
故选A．