问题
解答题
求下列各式的值 (1)
(2)2
(3)
(4)|
|
答案
(1)原式=2+3-2
=3;
(2)原式=(2+3-5)3
=0;
(3)原式=0.8+9+2
=11.8;
(4)原式=
-7
+5
-2+3-5 7
=1.
求下列各式的值 (1)
(2)2
(3)
(4)|
|
(1)原式=2+3-2
=3;
(2)原式=(2+3-5)3
=0;
(3)原式=0.8+9+2
=11.8;
(4)原式=
-7
+5
-2+3-5 7
=1.