2(log√2)+lg√2*lg5+√(lg√2)-lg2+1

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2(log√2)+lg√2*lg5+√(lg√2)-lg2+12(log√2)+lg√2*lg5+√(lg√2)-lg2+12(log√2)+lg√2*lg5+√(lg√2)-lg2+1要简便方法么?

2(log√2)+lg√2*lg5+√(lg√2)-lg2+1
2(log√2)+lg√2*lg5+√(lg√2)-lg2+1

2(log√2)+lg√2*lg5+√(lg√2)-lg2+1
要简便方法么?

(2(log√2)+lg5)× lg√2+√(lg√2-1)= lg√2+(1-lg√2 )
=1