问题
解答题
化简求值: (1)
(2)
(3)a3•
(4)27
|
答案
(1)原式=
=2;4 24
(2)原式=x-6(x<6);
(3)原式=a3+
+2 3
=a4;1 3
(4)原式=(33)
-31 6
+(24)1 2
-(2-1)-2=33 4
-31 2
+23-22=8-4=4.1 2
化简求值: (1)
(2)
(3)a3•
(4)27
|
(1)原式=
=2;4 24
(2)原式=x-6(x<6);
(3)原式=a3+
+2 3
=a4;1 3
(4)原式=(33)
-31 6
+(24)1 2
-(2-1)-2=33 4
-31 2
+23-22=8-4=4.1 2