问题
解答题
计算: (1)
(2)(
|
答案
(1)原式=2
-10 1 2
+10 10
=5 2
;10
(2)原式=(4
-33
)(42
+33
)2
=(4
)2-(33
)22
=48-18
=30.
计算: (1)
(2)(
|
(1)原式=2
-10 1 2
+10 10
=5 2
;10
(2)原式=(4
-33
)(42
+33
)2
=(4
)2-(33
)22
=48-18
=30.