log9 3+log9 27=怎么求~

log9 3+log9 27=怎么求~ log9^27= log16(27)=a,求log9(96) 求x,y值.6log9^x+3log27^y=8log3^x+2log9^y=2 log9(log2(8)) = x ,求x 不等式log9(27^x-2*3^x) 不等式log9(27^x-2*3^x) log9(16) ×log2(27)=6步骤 log9^8×log4^27=____. 怎们算log9 27? log9 27等于多少 计算3^log9(64) log9 81=? log3(x-1)=log9(x+5) 中log9(x+5) 怎么化简? log3(x-1)=log9(x+5) 中log9(x+5) 怎么化简? 已知log9 5=a,log9 7=b,求log35 9的值在线等 log9(x-5)+log9(x=+3)=1 9是那个log的底 log9(45)-log9(5)