log₂2.5+log₂1/40=?

log₂log₃log₄ X=log₃log₄logS 求下式x值log₂（1og₃（log底数5x））=0 log 已知x,y,z均大于1,w不等于0,log x w=24,log y w=40,log xyz w=12,求log z [1 log(9544.5) log(0.84) log(34403.8) log(255); log₂9÷log₂3＝?请说下过程, 化简：log₂12－log₂3 log(2.5)6.25-lg(1/100)+ln(e√e)+log2(log(2)16)=? 计算：1/[log(2)3]+1/[log(5)3]=? log(X+5)+log(X+2)=1 求log₂25×log₃2√2×log(5)9的结果, log₂3×log₃4＋﹙√3﹚∧log₃4＝