问题
解答题
计算: (1)(
(2)[(
|
答案
(1)原式=(2
-3
)-(3 2 2
+43 6 2
-73
)2
=2
-3
-3 2 2
-43 6 2
+73 2
=-2
+3 11 2
-2 3 2
;6
(2)原式=(
-2-2+22
+1)(2
-1)2
=(3
-3)(2
-1)2
=6-3
-32
+32
=9-6
.2
计算: (1)(
(2)[(
|
(1)原式=(2
-3
)-(3 2 2
+43 6 2
-73
)2
=2
-3
-3 2 2
-43 6 2
+73 2
=-2
+3 11 2
-2 3 2
;6
(2)原式=(
-2-2+22
+1)(2
-1)2
=(3
-3)(2
-1)2
=6-3
-32
+32
=9-6
.2