log0.08(2.5*√2)=log8/100(25/10*2^1/2)=log2/25(5*2^-1 *2^1/2)=log2/5^2(5*2^-1/2)=1/2log√2/5(5/√2)= -1/2log5/√2(5/√2)= -1/2= -0.5