题目内容
计算或化简:
(1)(
+
)-(
-
)
(2)(
+
)(
-
)
(3)
-
-
+
(4)
×(
-
)
(5)a
+
-
(6)
(7)
×
(8)
+
-
(9)(2
+
)(2
-
)
(10)(
+1)2-2
.
(1)(
| 45 |
| 18 |
| 8 |
| 125 |
(2)(
| 5 |
| 6 |
| 5 |
| 6 |
(3)
| 27 |
| 45 |
| 20 |
| 75 |
(4)
| 5 |
| 10 |
| 5 |
(5)a
|
| 9a |
3
| ||
|
(6)
| ||
|
(7)
| 8ab |
| 6ab3 |
(8)
|
| 16y |
| 9y |
(9)(2
| 3 |
| 5 |
| 3 |
| 5 |
(10)(
| 3 |
| 48 |
(1)原式=3
+3
-2
+5
=8
+
;
(2)原式=(
)2-(
)2
=5-6
=-1;
(3)原式=3
-3
-2
+5
=8
-5
;
(4)原式=
×
-
×
=5
-5;
(5)原式=a•
+3
-
=
+3
-
=3
;
(6)原式=
=
;
(7)原式=
=4
ab2;
(8)原式=
+4
-3
=
;
(9)原式=(2
)2-(
)2
=12-5
=7;
(10)原式=3+2
+1-8
=4-6
.
| 5 |
| 2 |
| 2 |
| 5 |
=8
| 5 |
| 2 |
(2)原式=(
| 5 |
| 6 |
=5-6
=-1;
(3)原式=3
| 3 |
| 5 |
| 5 |
| 3 |
=8
| 3 |
| 5 |
(4)原式=
| 5 |
| 10 |
| 5 |
| 5 |
=5
| 2 |
(5)原式=a•
| ||
| a |
| a |
3
| ||
| 3 |
=
| 3a |
| a |
| 3a |
=3
| a |
(6)原式=
(
| ||||
|
=
4-
| ||
| 2 |
(7)原式=
| 8ab•6ab3 |
=4
| 3 |
(8)原式=
| 5 |
| 2 |
| y |
| y |
| y |
=
| 7 |
| 2 |
| y |
(9)原式=(2
| 3 |
| 5 |
=12-5
=7;
(10)原式=3+2
| 3 |
| 3 |
=4-6
| 3 |
练习册系列答案
相关题目