问题
解答题
计算:(1)(2-
(2)(3
(3)(3
|
答案
(1)原式=22-(
)2=4-3=1;3
(2)原式=(9
+2
-22
)÷42
=82
÷42
=2;2
(3)原式=(6
-3
+42 3 3
)÷23 3
=
÷228 3 3 3
=
.14 3
计算:(1)(2-
(2)(3
(3)(3
|
(1)原式=22-(
)2=4-3=1;3
(2)原式=(9
+2
-22
)÷42
=82
÷42
=2;2
(3)原式=(6
-3
+42 3 3
)÷23 3
=
÷228 3 3 3
=
.14 3