lg25+(2/3)lg8+lg5.lg20+(lg2)^2
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/26 04:48:27
lg25+(2/3)lg8+lg5.lg20+(lg2)^2lg25+(2/3)lg8+lg5.lg20+(lg2)^2lg25+(2/3)lg8+lg5.lg20+(lg2)^2lg25+(2/3)
lg25+(2/3)lg8+lg5.lg20+(lg2)^2
lg25+(2/3)lg8+lg5.lg20+(lg2)^2
lg25+(2/3)lg8+lg5.lg20+(lg2)^2
lg25+(2/3)lg8+lg5.lg20+(lg2)^2
=2lg5+2lg2+lg5(1+lg2)+(lg2)²
=2+lg5+lg5lg2+lg²2
=2+lg5+lg2
=2+1
=3