What is 2 log x - logy - 2 log z written as a single logarithm?

Log [x^2 / yz^2]

Step-by-step explanation:

2log (x) = log (x^2)

-log (y) = The minus sign means that you can divide it by first log (x^2)

-2log (z) = log (z^2), and the minus sign again means you can divide it by the first log (x^2)

So, the whole thing can be written like this:

Log (x^2) / [log (y) * log (z^2) ], OR:

Log [x^2 / yz^2]