问题
解答题
计算:(lg5)2+lg2lg5+lg2+(
|
答案
∵(lg5)2+lg2•lg5+lg2+(
)27 8
-(2 3
)23 8
=lg5(lg5+lg2)+lg2+(
)3×3 2
-222 3
=lg5+lg2+
-49 4
=-
.3 4
计算:(lg5)2+lg2lg5+lg2+(
|
∵(lg5)2+lg2•lg5+lg2+(
)27 8
-(2 3
)23 8
=lg5(lg5+lg2)+lg2+(
)3×3 2
-222 3
=lg5+lg2+
-49 4
=-
.3 4