问题
解答题
计算: (1)
(2)(
|
答案
(1)
+8 1 5
+50
-27 1 2 12
=2
+2
×51 5
+32
-3
×21 2 3
=2
+2
+32
-3 3
=3
+22
;3
(2)(
-1)2-(3
-3
)(2
+3
)2
=3-2
+1-3+23
=3-2
.3
计算: (1)
(2)(
|
(1)
+8 1 5
+50
-27 1 2 12
=2
+2
×51 5
+32
-3
×21 2 3
=2
+2
+32
-3 3
=3
+22
;3
(2)(
-1)2-(3
-3
)(2
+3
)2
=3-2
+1-3+23
=3-2
.3