题目内容
(3-2
+
)(3+
-
).
| 2 |
| 3 |
| 8 |
| 3 |
原式=[3-(2
-
)][3+(2
-
)]
=32-(2
-
)2
=9-(8+3-4
)
=9-8-3+4
=4
-2.
| 2 |
| 3 |
| 2 |
| 3 |
=32-(2
| 2 |
| 3 |
=9-(8+3-4
| 6 |
=9-8-3+4
| 6 |
=4
| 6 |
练习册系列答案
相关题目
有理数-22,(-2)3,-|-2|,-(-
)中,负数有( )
| 1 |
| 2 |
| A、1个 | B、2个 | C、3个 | D、4个 |