利用因式分解计算:
(1)100
2-99
2+98
2-97
2+…+4
2-3
2+2
2-1
2(2)1+24(5
2+1)(5
4+1)(5
8+1)•…•(5
32+1)
(3)
.
人气:267 ℃ 时间:2020-03-21 11:24:40
解答
(1)1002-992+982-972+…+42-32+22-12=(100+99)(100-99)+(98+97)(98-97)+…+(4+3)(4-3)+(2-1)(2+1)=100+99+98+97+…+4+3+2+1=101×50=5050;(2)1+24(52+1)(54+1)(58+1)•…•(532+1)=1+2...
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