Can logarithms have negative answers?

Answer 1

If you mean ln (x) = negative number, yes, they can.
If you mean ln (negative number) = y, no it's not possible. If you plot ln x, the plot is asymptotic to y-axis from the right (positive values of x only), therefore the plot will never reach x equal to zero nor the negative values.

hope that's clear ^^;

Answer 2

Okay, thank you!