问题
解答题
(1)计算:(0.0625)-
(2)计算:
|
答案
(1)原式=(
)4×(-1 2
)-22×(-2)+1 4
-10(2+
)3 (2-
)(2+3
)3 300
=2+8+10(2+
)-103
=30.3
(2)原式=
=
⋅(lglg23-2lg3+1
)
×827 1000 lg
⋅lg3 10 12 10
⋅((lg3-1)2
lg3+3lg2-3 2
)3 2 (lg3-1)⋅(lg3+2lg2-1)
=
=-(1-lg3)⋅
(lg3+2lg2-1)3 2 (lg3-1)⋅(lg3+2lg2-1)
.3 2