问题
解答题
计算(1)log224+lg
(2)(
|
答案
(1)log224+lg
-log31 2
+lg2-log2327
=(log224-log23)+(lg
+lg2)-log331 2 3 2
=log28+lg1-
=3 2 3 2
(2)(
×3 3
)6-(2
)-1 9
-(-8)03 2
=(3
×21 3
)6-(3-2)-1 2
-13 2
=9×8-27-1
=44.