问题
解答题
求下列各式的值: (1)-
(2)±
(3)
|
答案
(1)-
=-16 25
=-(
)24 5
;4 5
(2)±
=±0.0169
=±0.13;0.132
(3)
-0.09 3 -8
=
-0.32 3 (-2)3
=0.3+2
=2.3.
求下列各式的值: (1)-
(2)±
(3)
|
(1)-
=-16 25
=-(
)24 5
;4 5
(2)±
=±0.0169
=±0.13;0.132
(3)
-0.09 3 -8
=
-0.32 3 (-2)3
=0.3+2
=2.3.