问题
解答题
计算:
|
答案
原式=
+
+2 2 1 2
×1 2 2 2 (tan60°-1)2
=
+
+12 2 2 4
-13
=
×
+12 2
+4 2
-13
=2+
+2
-13
=1+
+2
.3
计算:
|
原式=
+
+2 2 1 2
×1 2 2 2 (tan60°-1)2
=
+
+12 2 2 4
-13
=
×
+12 2
+4 2
-13
=2+
+2
-13
=1+
+2
.3