1) log5 1 = 0log5 1/25 = log5 (1/5)^2 = 2log5 (1/5) = 2*(-1) = -2log5 0.04 = log5 (4/100) = log5 (1/25) = -2
2) log16 32 = log16 (2^5) = 5log16 2 = 5/4
3) log3 9 - log3 15 + log3 5 = log3 (9*5/15) = log3 3 = 1
1) log5 1 = 0
log5 1/25 = log5 (1/5)^2 = 2log5 (1/5) = 2*(-1) = -2
log5 0.04 = log5 (4/100) = log5 (1/25) = -2
2) log16 32 = log16 (2^5) = 5log16 2 = 5/4
3) log3 9 - log3 15 + log3 5 = log3 (9*5/15) = log3 3 = 1