已知4的n加3次方乘以8的n减1次方除以2的4n加5次方等于128,求n的值
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发布时间:2024-08-07 07:35
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热心网友
时间:2024-08-18 04:24
[4^(n+3)]*[8^(n-1)]/[2^(4n+5)] =128
[2^(2n+6)]*[2^(3n-3)]/[2^(4n+5)] =128
2^[(2n+6)+(3n-3)-(4n+5)]=128
2^(n-2)=128=2^7
n-2=7
n=9
热心网友
时间:2024-08-18 04:28
[4^(n+3)]*[8^(n-1)]/[2^(4n+5)] =128
[2^(2n+6)]*[2^(3n-3)]/[2^(4n+5)] =128
2^[(2n+6)+(3n-3)-(4n+5)]=128
2^(n-2)=128=2^7
n-2=7
n=9