lg根號(hào)下27+lg8-3lg根號(hào)下10—————————————— 2lg2+lg3-1計(jì)算題謝謝!

熱心網(wǎng)友

原式=[lg3^(3/2)+lg2^3-3lg10^(1/2)]/(2lg2+lg3-1)=[3/2*lg3+3lg2-3/2*1)/(2lg2+lg3-1)=3/2*(lg3+2lg2-1)/(lg3+2lg2-1)=3/2.