问道对数题 lg2*lg50+lg20*lg5-2lg5*lg2
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问道对数题lg2*lg50+lg20*lg5-2lg5*lg2问道对数题lg2*lg50+lg20*lg5-2lg5*lg2问道对数题lg2*lg50+lg20*lg5-2lg5*lg2lg2(lg5
问道对数题 lg2*lg50+lg20*lg5-2lg5*lg2
问道对数题
lg2*lg50+lg20*lg5-2lg5*lg2
问道对数题 lg2*lg50+lg20*lg5-2lg5*lg2
lg2(lg5+1)+(lg2+1)*lg5-2lg5*lg2
=lg2+lg5
=lg10
=1
问道对数题 lg2*lg50+lg20*lg5-2lg5*lg2
高一对数计算lg21*lg50+lg25-lg51*lg20=lg2*lg50+lg25-lg5*lg20=
lg2*lg50-lg5*lg20-lg4
lg2*lg50+lg5*lg20-2lg5*lg2
对数函数运算要求给过程.lg2 lg50+lg25-lg5 lg20
一道对数题(lg2)^2+lg2乘以lg50+lg25
计算 lg5×lg20-lg2×lg50-lg25
lg5 X lg20 - lg2 X lg50 - lg25
lg2·lg50-lg5·lg20-lg4
化简 lg2×lg50+lg25-lg5×lg20
lg2*lg50 + lg20*lg5 - 2lg5*lg2=?还有类似这种一般的对数的乘法怎么做
一道高一对数运算题lg50+lg2*log5+(lg2)^2lg50+lg2*lg5+(lg2)^2
求值lg2*lg50+lg5*lg20-lg100*lg2*lg5
对数的计算:lg5·lg20-lg2·lg50-lg25=我只等到今晚9:30
如题 lg2.lg50+lg5.lg20-2lg5.lg2 求大仙 回答的快有悬赏.为乘
lg2*lg50+lg25-lg5*lg20需要过程,谢谢~
lg2*lg50-lg5*lg20-lg4 最后答案是-1,
求教一道数学对数题(lg2)²+lg2×lg5+lg50+log27 9