问题
解答题
计算: (1)
(2)(
|
答案
(1)原式=
-23 3
+1-(2-3
)3
=
-23 3
+1-2+3 3
=-
-1;2 3 3
(2)原式=(2
+42
)(3
-22
)-(2+3-23
)6
=2(
+22
)(3
-22
)-(5-23
)6
=2(2-12)-5+26
=-25+2
.6
计算: (1)
(2)(
|
(1)原式=
-23 3
+1-(2-3
)3
=
-23 3
+1-2+3 3
=-
-1;2 3 3
(2)原式=(2
+42
)(3
-22
)-(2+3-23
)6
=2(
+22
)(3
-22
)-(5-23
)6
=2(2-12)-5+26
=-25+2
.6