问题
填空题
计算:(
|
答案
令
+1 2
+2 3
+3 4
+4 5
+5 6
=a,则:6 7
原式=a2+a×
-(1+a)×(a-1 2
)1 2
=a2+
a-(a2+1 2
a-1 2
)1 2
=
.1 2
故答案为:
.1 2
计算:(
|
令
+1 2
+2 3
+3 4
+4 5
+5 6
=a,则:6 7
原式=a2+a×
-(1+a)×(a-1 2
)1 2
=a2+
a-(a2+1 2
a-1 2
)1 2
=
.1 2
故答案为:
.1 2