2^(2+log2 5)—2^(log2 3乘以log3 5)的值为

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2^(2+log25)—2^(log23乘以log35)的值为2^(2+log25)—2^(log23乘以log35)的值为2^(2+log25)—2^(log23乘以log35)的值为2^(2+lo

2^(2+log2 5)—2^(log2 3乘以log3 5)的值为
2^(2+log2 5)—2^(log2 3乘以log3 5)的值为

2^(2+log2 5)—2^(log2 3乘以log3 5)的值为
2^(2+log2 5)—2^(log2 3乘以log3 5)的值为
=2^2*2^(log2 5)-2^(log2 5)
=4*5-5
=15

首先要知道m^(logm n)=n m*loga b=loga (b^m)
2^(2+log2 5)=2^(log2 4 +log2 5)=2^(log2 20)=20
2^(log2 3乘以log3 5)=2^(log2 3)^(log3 5)=5
原式=20-5=15

log2^(4^7*2^5)+log2^6-log2^3 2log2 10—log2 25=? log2 50-2log2 5 等于多少? log2(x – 2 ) + 2 = log2(5)log2(x – 2 ) + 2 = log2(5) log2(x – 2 ) + 2 = log2(5)log2(x – 2 ) + 2 = log2(5) 计算：（1）log2 (4^3*8^5);(2)log2 3+log2 6-log2 9 [log2 1]+[log2 2]+[log2 3]+[log2 4]+[log2 5]+...+[log2 1024]=?[x]表示不超过x的最大整数2为底答案是8204 log2 SQR(7/48)+log2 12 -1/2log2 42 log2 SQR(7/48)+log2 12 -1/2log2 48 (log2 9)/(log2 8) = 2/3(log2 3) log2 3乘以log2 3等于2log2 log2(20)-log2(5)+2log3(2)×log4(3) 求值：log2 (5/56)^(1/2)+log2 (14)-(1/2)log2 (35)=log2中2为底数=1/2[-2log2 (7)-3]+log2 (2)+log2 (7) 中的1/2[-2log2 (7)-3]是怎么得到的？ 4^1/2（log2^9-log2^5）的值 , 解2log2^(x-5)=log2^(x-1)+1 (log2)^2+(log5)^2+log2*log25 log2 5/log2 3为什么等于log3 5 log2 5,log2 3的2是角标 log3 5的3是角标log2 5/log2 3为什么等于log3 5log2 log2 3的2是角标，log3 5的3是角标 |[log2(x)]^2-3log2(x)+1|