C candynl New member Xu 0 1/11/13 #1 giải bpt: 1) lg(x+15) +lg(2x-5) <2 2) log(x-1)(x^2 -x) >2 3) 1/2.log(x^2 +3)(x^2 -6)^2 < 2+ 1/12.log(căn 2)(1/64) 4)log(x)[(3x+2)/(x+2)] >1
giải bpt: 1) lg(x+15) +lg(2x-5) <2 2) log(x-1)(x^2 -x) >2 3) 1/2.log(x^2 +3)(x^2 -6)^2 < 2+ 1/12.log(căn 2)(1/64) 4)log(x)[(3x+2)/(x+2)] >1