问题
解答题
计算:(1)
(2)
|
答案
(1)原式=2
÷4-3
+1 2
=
+13 2
;3
(2)原式=(
-18× 1 2
×218
)-[(35
)2+2(32
)(-2
)+(-5
)2],(2分)5
=(3-6
)-(23-610
),(2分)10
=-20.(5分)
计算:(1)
(2)
|
(1)原式=2
÷4-3
+1 2
=
+13 2
;3
(2)原式=(
-18× 1 2
×218
)-[(35
)2+2(32
)(-2
)+(-5
)2],(2分)5
=(3-6
)-(23-610
),(2分)10
=-20.(5分)