0001^(-1/4)+27^(2/3)+1/9^(-1.5)=?lg2+lg5-lg8 / lg50-lg40=?

问题描述:

0001^(-1/4)+27^(2/3)+1/9^(-1.5)=?lg2+lg5-lg8 / lg50-lg40=?

0.0001^(-1/4)+27^(2/3)+1/9^(-1.5)=
=10+9+27
=46
lg2+lg5-lg8 / lg50-lg40
=lg(2×5÷8)/lg(50÷40)
=lg(5/4)/lg(5/4)
=1