问题
解答题
(1)2
(2)2
(3)(
(4)(2
|
答案
(1)原式=4
×3
×3 4
=3×1 5 2
=2 10
;3 2 10
(2)原式=4
-23
+93
=22
+93
;2
(3)原式=
×(-26
)-6 1 3
×(-23
)-6
×(-22
)=-12+26
+42
;3
(4)原式=(2
-3
)(26
+3
)=(26
)2-(3
)2=12-6=6.6