Question

求值：lg500+lg

8

5

-

1

2

lg64+50(lg2+lg5)2=______．

Answer 1

lg500+lg

8

5

-

1

2

lg64+50(lg2+lg5)2
=lg（5×10²）+lg8-lg5-lg

64

+50[lg（2×5）]²
=lg5+2+lg8-lg5-lg8+50
=52．
故答案为52