4log 9 x 3log 125 x 25 log 16

4 log 16Rewrite log(16) log (16) as log(24) log (2 4). Expand log(24) log (2 4) by moving 4 4 outside the logarithm. Rewrite log(4) log (4) as log(22) log (2 2). Expand log(22) log (2 2) by movingThe log base 2 calculator quickly computes the value of the logarithm Similarly, log₂ 16 = 4 or log₂ 32 = 5. But what is, say, log₂ 5? Surely, 5