问题
解答题
计算: ①
②2
③(
|
答案
①原式=2-2×2+3+1
=2;
②原式=4
+3 4 9
-43
-3 2 3 3
=-2 9
;3
③原式=(4
-33
)(42
+33
)-(5-22
)6
=48-18-5+26
=25+2
.6
计算: ①
②2
③(
|
①原式=2-2×2+3+1
=2;
②原式=4
+3 4 9
-43
-3 2 3 3
=-2 9
;3
③原式=(4
-33
)(42
+33
)-(5-22
)6
=48-18-5+26
=25+2
.6