I've just introduced myself to logarithms and have done most of the questions, but am having trouble with one or two of them: Q1: Find values of x for which: Log(to base 3)x - 2log(to base x)3 = 1. I have no idea where to start on this question. Q2: Solve: 25^x = 5^(x+1) -6. On this question, i know it can be simplified to give: 25^x = 5(5^x) - 6 However, if i let y=5^x, what would 25^x be? It's not 5y, as 5(5^x) is 5y. Thanks for any help.