问题
解答题
计算: (1)
(2)
(3)
(4)
|
答案
(1)原式=
=--3 5 4 5
;3 4
(2)原式=
=81 25×144
=9 5×12
;3 20
(3)原式=
=1;
•5 3
•3 7 7 5
(4)原式=
•3a 2b
=
•b a b 4
.3 4
计算: (1)
(2)
(3)
(4)
|
(1)原式=
=--3 5 4 5
;3 4
(2)原式=
=81 25×144
=9 5×12
;3 20
(3)原式=
=1;
•5 3
•3 7 7 5
(4)原式=
•3a 2b
=
•b a b 4
.3 4