Need help on my homework.

You need to write it properly and distinguish base and exponent.

log

_{3}81 - log_{p}1 / log_{2}√28 - log 0.001 = 4 - 0 - (- 3 ) =7

2.

log

_{4[ }log_{3( }log_{2}8) = log

_{4[ }log_{3 }3 ]= log

_{4 }1 = 0