Splitting the logarithm of a sumlog(x + y) is not equal to log x + log y. The law applies only to products.
Confusing a product of logarithms with a logarithm of a productlog x × log y is a different quantity from log(xy).
Forgetting the domain after combiningan answer may fail the condition that every argument is positive, so always check.
Wrong quotient lawlog(x / y) = log x − log y, not log x ÷ log y.