问题
解答题
化简: (1)
(2)
(3)
(4)
|
答案
(1)48
=3×42
=4
;3
(2)1 2 72
=1 2 62
=
×61 2 2
=3
;2
(3)8a3b4
=(2ab2)2•2a
=2ab2
;2a
(4)a4+a8
=a4(1+a4)
=a2
.1+a4
化简: (1)
(2)
(3)
(4)
|
(1)48
=3×42
=4
;3
(2)1 2 72
=1 2 62
=
×61 2 2
=3
;2
(3)8a3b4
=(2ab2)2•2a
=2ab2
;2a
(4)a4+a8
=a4(1+a4)
=a2
.1+a4