问题
解答题
化简: (1)(2
(2)(
(3)
(4)
|
答案
(1)原式=(2
)2+(3
)2-2×22
×3
=12+2-42
=14-46
;6
(2)原式=(
)2-22=3-4=-1;3
(3)原式=
=3
-23 3 3
=1;3 3
(4)原式=2
+42
-2
+2
=2 2 11 2
.2
化简: (1)(2
(2)(
(3)
(4)
|
(1)原式=(2
)2+(3
)2-2×22
×3
=12+2-42
=14-46
;6
(2)原式=(
)2-22=3-4=-1;3
(3)原式=
=3
-23 3 3
=1;3 3
(4)原式=2
+42
-2
+2
=2 2 11 2
.2