问题
解答题
计算: (1)(5
(2)(5
|
答案
(1)原式=(5
-1 3
)-6=5-1 2
×(-6)=5;1 6
(2)原式=[(
-5
)(3
+5
)]3=[(3
)2-(5
)2]3=(5-3)3=8.3
计算: (1)(5
(2)(5
|
(1)原式=(5
-1 3
)-6=5-1 2
×(-6)=5;1 6
(2)原式=[(
-5
)(3
+5
)]3=[(3
)2-(5
)2]3=(5-3)3=8.3