题目内容
计算:
(1)(
)100×(1
)100×(
)2013×42014.
(2)(1+
)(1+
)(1+
)(1+
)+
.
(1)(
| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 4 |
(2)(1+
| 1 |
| 2 |
| 1 |
| 22 |
| 1 |
| 24 |
| 1 |
| 28 |
| 1 |
| 215 |
考点:平方差公式,幂的乘方与积的乘方
专题:计算题
分析:(1)原式逆用积的乘方运算法则计算即可得到结果;
(2)原式变形后,利用平方差公式计算即可得到结果.
(2)原式变形后,利用平方差公式计算即可得到结果.
解答:解:(1)原式=(
×
×
×4)100×4=4;
(2)原式=2(1-
)(1+
)(1+
)(1+
)(1+
)+
=2(1-
)(1+
)(1+
)(1+
)+
=2(1-
)(1+
)(1+
)+
=2(1-
)(1+
)+
=2(1-
)+
=2.
| 2 |
| 3 |
| 3 |
| 2 |
| 1 |
| 4 |
(2)原式=2(1-
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 22 |
| 1 |
| 24 |
| 1 |
| 28 |
| 1 |
| 215 |
=2(1-
| 1 |
| 22 |
| 1 |
| 22 |
| 1 |
| 24 |
| 1 |
| 28 |
| 1 |
| 215 |
=2(1-
| 1 |
| 24 |
| 1 |
| 24 |
| 1 |
| 28 |
| 1 |
| 215 |
=2(1-
| 1 |
| 28 |
| 1 |
| 28 |
| 1 |
| 215 |
=2(1-
| 1 |
| 216 |
| 1 |
| 215 |
=2.
点评:此题考查了平方差公式,熟练掌握平方差公式是解本题的关键.
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