(3+1)(3的平方+1)(3的四次方+1)(3的八次方+1)(3的十六次方+1)是多少?
答案:5 悬赏:50 手机版
解决时间 2021-03-08 17:33
- 提问者网友:蓝琪梦莎
- 2021-03-08 00:36
(3+1)(3的平方+1)(3的四次方+1)(3的八次方+1)(3的十六次方+1)是多少?
最佳答案
- 五星知识达人网友:蕴藏春秋
- 2021-03-08 02:13
方法就是在前面先乘以(3-1),每次都用平方差公式,完了再除以(3-1),完整的过程及结果如下:
(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)
=(3-1)(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)/(3-1)
=(3^2-1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)/(3-1)
=(3^4-1)(3^4+1)(3^8+1)(3^16+1)/(3-1)
=(3^8-1)(3^8+1)(3^16+1)/(3-1)
=(3^16-1)(3^16+1)/(3-1)
=(3^32-1)/2
=463255047212960
(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)
=(3-1)(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)/(3-1)
=(3^2-1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)/(3-1)
=(3^4-1)(3^4+1)(3^8+1)(3^16+1)/(3-1)
=(3^8-1)(3^8+1)(3^16+1)/(3-1)
=(3^16-1)(3^16+1)/(3-1)
=(3^32-1)/2
=463255047212960
全部回答
- 1楼网友:孤老序
- 2021-03-08 05:09
在最前面*(3-1),整个式子除以(3-1)。这样就可以用平方差公式。
最后结果(3^32-1)/(3-1)= 4.6326e+014
最后结果(3^32-1)/(3-1)= 4.6326e+014
- 2楼网友:空山清雨
- 2021-03-08 04:44
(3-1)(3+1)(3的平方+1)(3的四次方+1)(3的八次方+1)(3的十六次方+1)=3的三十二次方-1=1,853,020,188,851,840
(3+1)(3的平方+1)(3的四次方+1)(3的八次方+1)(3的十六次方+1)=926,510,094,425,920
(3+1)(3的平方+1)(3的四次方+1)(3的八次方+1)(3的十六次方+1)=926,510,094,425,920
- 3楼网友:像个废品
- 2021-03-08 03:30
用平方差公式。
(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)
=1/(3-1)*(3-1)(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)
=1/2*(3^2-1)(3^4+1)(3^8+1)(3^16+1)
=1/2(3^32-1)
(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)
=1/(3-1)*(3-1)(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)
=1/2*(3^2-1)(3^4+1)(3^8+1)(3^16+1)
=1/2(3^32-1)
- 4楼网友:人间朝暮
- 2021-03-08 02:28
(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)
=(3-1)(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)/(3-1)
=(3^2-1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)/(3-1)
=(3^4-1)(3^4+1)(3^8+1)(3^16+1)/(3-1)
=(3^8-1)(3^8+1)(3^16+1)/(3-1)
=(3^16-1)(3^16+1)/(3-1)
=(3^32-1)/2
=(3-1)(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)/(3-1)
=(3^2-1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)/(3-1)
=(3^4-1)(3^4+1)(3^8+1)(3^16+1)/(3-1)
=(3^8-1)(3^8+1)(3^16+1)/(3-1)
=(3^16-1)(3^16+1)/(3-1)
=(3^32-1)/2
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