题目内容
化简:
(1)
(2)-
(3)-
(4)
(1)
| (-144)×(-169) |
(2)-
| 1 |
| 3 |
| 225 |
(3)-
| 1 |
| 2 |
| 1024×5 |
(4)
| 18m2n |
(1)原式=
=
×
=12×13=156;
(2)原式=-
×15=-5;
(3)原式=-
=-
×32
=-16
;
(4)原式=
=3|m|
.
| 144×169 |
| 144 |
| 169 |
(2)原式=-
| 1 |
| 3 |
(3)原式=-
| 1 |
| 2 |
| 322×5 |
| 1 |
| 2 |
| 5 |
| 5 |
(4)原式=
| 32×m2×2n |
| 2n |
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