log8^9.log27^32+lg25+lg2.lg50+lg2.lg2

来源：学生作业帮编辑：大师作文网作业帮分类：数学作业时间：2024/11/10 20:36:42

log8^9.log27^32+lg25+lg2.lg50+lg2.lg2 换底公式
=(2lg3/3lg2)*(5lg2/3lg3)+2lg5+lg2(1+lg5)+lg2*lg2
=10/9+2lg5+lg2+lg2lg5+lg2*lg2
=10/9+2lg5+lg2+lg2(lg5+lg2)
=10/9+2lg5+2lg2
=10/9+2(lg5+lg2)
=10/9+2
=28/9
请参考……

log8^9.log27^32+lg25+lg2.lg50+lg2.lg2 lg2+lg2.lg50+lg25 (lg2)^2+lg2×lg50+lg25 lg2*lg2+lg50*lg2+lg25=? lg25+lg2*lg50+lg4 lg25+lg2*lg50+(lg2)^2+1=? 计算lg25+lg2*lg50+(lg2)^2 lg25+lg2*lg50+(lg2的平方) 求值：lg25 lg2*lg50 (lg2)^2 计算lg25+lg2+lg50+(lg2)^2 (lg2)²+lg2·lg50+lg25= 1.（lg2)^2+lg2*lg50+lg25