题目内容
化简:
(1)
-9
+
×
;
(2)|-
|+(
+1)0-
;
(3)(2
+3
)(2
-3
);
(4)(
+
)2.
(1)
27 |
|
18 |
2 |
(2)|-
3 |
2 |
12 |
(3)(2
3 |
2 |
3 |
2 |
(4)(
2 |
3 |
(1)原式=3
-3
+3
×
=6;
(2)原式=
+1-2
=1-
;
(3)原式=(2
)2-(3
)2=12-18=-6.
(4)原式=(
)2+(
)2+2
×
=5+2
.
3 |
3 |
2 |
2 |
(2)原式=
3 |
3 |
3 |
(3)原式=(2
3 |
2 |
(4)原式=(
2 |
3 |
2 |
3 |
6 |
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