题目内容
计算:(3+1)×(32+1)×(34+1)×(38+1)-
.
| 316 |
| 2 |
考点:平方差公式
专题:
分析:乘以
×(3-1),再依次运用平方差公式进行计算即可.
| 1 |
| 2 |
解答:解:原式=
×(3-1)×(3+1)×(32+1)×(34+1)×(38+1)-
=
×(32-1)×(32+1)×(34+1)×(38+1)-
=
×(34-1)×(34+1)×(38+1)-
=
×(38-1)×(38+1)-
=
(316-1)-
×316
=-
.
| 1 |
| 2 |
| 316 |
| 2 |
=
| 1 |
| 2 |
| 316 |
| 2 |
=
| 1 |
| 2 |
| 316 |
| 2 |
=
| 1 |
| 2 |
| 316 |
| 2 |
=
| 1 |
| 2 |
| 1 |
| 2 |
=-
| 1 |
| 2 |
点评:本题考查了平方差公式的应用,注意:(a+b)(a-b)=a2-b2.
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