第一题(2lg2+lg3)/(1+1/2lg0.36+1/3lg8)
问题描述:
第一题(2lg2+lg3)/(1+1/2lg0.36+1/3lg8)
第二题 2√3乘以6次√12乘以3次√(3/2)
答
第一题 (2lg2+lg3)/(1+1/2lg0.36+1/3lg8)
= (lg4+lg3)/(1+lg0.6+lg2)
=lg12/lg12=1
第二题 2√3*(6次√12)*(3次√(3/2))
= 2√3*(3次√(2√3))*(3次√(3/2))
=[(2√3)^(4/3)]*[(3/2)^(1/3)]
=[144^(1/3)]*[(3/2)^(1/3)]
=216^(1/3)
=6