log2的平方加log2乘log5可以写成什么.还有为什么

log2的平方加log2乘log5可以写成什么.还有为什么 log2加log5怎么算? log2 5乘log5 4等于多少 (log5)+(log2)(log50)的值!急用,谢咯! log2/log5等于多少   求(log2)^3+(log5)^3+log5×log8的值. (log2) ^2 - log5 *log20课本上 等于 （log2）^2 +(1+log2)(1-log2) = 1;（log2）^2 +(1+log2)(1-log2) 是怎么来的? (log2)^2+(log5)^2+log2*log25 怎样计算（log2)^2+(log5)^2+(2*log2)*log5 log2[log3[log5 125]]=?log2[log3[log5 125]]=? (log2)和(log3)变成(log5) log5[log2(log9/log3)]=? (log5)^2+(log2)(log50)=? log2(5)*log5(8)化简 (log5)^2+log2·log50 log2(log5 x)=-1 log2的25次×log5的8次等于 (Log2)的三次方+(Log5)的三次方+lg8*lg5