来自巩绪芳的问题
【(1)a²-a-1=a²-()(2)a²-2a+2=a²-2()(1)a²-a-1=a²-()(2)a²-2a+2=a²-2()】
(1)a²-a-1=a²-()(2)a²-2a+2=a²-2()
(1)a²-a-1=a²-()
(2)a²-2a+2=a²-2()
1回答
2020-06-22 12:55