问题
解答题
(1)计算:(
(2)计算:
|
答案
(1)原式=
+3-21
-23
+1=-3
-2+3-23
+1=-33
+2; 2
(2)原式=3
+22
+2(2
+1)-32
=42
+2.2
(1)计算:(
(2)计算:
|
(1)原式=
+3-21
-23
+1=-3
-2+3-23
+1=-33
+2; 2
(2)原式=3
+22
+2(2
+1)-32
=42
+2.2