问题
解答题
计算: (1)2
(2)(3
(3)
(4)(-
|
答案
(1)原式=-
;5
(2)原式=(3
)2-(22
)2=18-12=6;3
(3)原式=
+32× 1 2
=4+2×5
;10
(4)原式=-2+1+2=1.
计算: (1)2
(2)(3
(3)
(4)(-
|
(1)原式=-
;5
(2)原式=(3
)2-(22
)2=18-12=6;3
(3)原式=
+32× 1 2
=4+2×5
;10
(4)原式=-2+1+2=1.