(lg5)²+lg2×lg50

来源:学生作业学帮网 编辑:学帮网 时间:2024/05/29 04:26:21

(lg5)²+lg2×lg50

(lg5)²+lg2×(lg5+lg5+lg2)
=(lg5)²+2lg2×lg5+(lg2)^2
=(lg2+lg5)^2=(lg10)^2=1