问题
解答题
计算 (1)
|
答案
(1)原式=
×2
-2×2 2
+3 2 (1-
)23
=1-
+3
-13
=0;
(2)原式=(
)2+(1 2
)2+2 2
×2
×13 2
=
+1 4
+1 2 6 2
=
+3 4
.6 2
计算 (1)
|
(1)原式=
×2
-2×2 2
+3 2 (1-
)23
=1-
+3
-13
=0;
(2)原式=(
)2+(1 2
)2+2 2
×2
×13 2
=
+1 4
+1 2 6 2
=
+3 4
.6 2