根号下{(lg3)平方-lg9+1}乘以(lg根号下27+lg8-lg根号下1000)再整体除以lg0.3乘以lg1.2
问题描述:
根号下{(lg3)平方-lg9+1}乘以(lg根号下27+lg8-lg根号下1000)再整体除以lg0.3乘以lg1.2
答
根号下{(lg3)-lg9+1}乘以(lg根号下27+lg8-lg根号下1000)÷(lg0.3x lg1.2) =根号下{(lg3)-2lg3+1}x(3/2lg3+3lg2-3/2)÷(lg0.3 x lg1.2) =根号下(1-lg3)x3/2lg1.2÷lg0.3 ÷ lg1.2 =(1-lg3)x3/2÷lg...