问题
解答题
|
答案
12×[（
-11 6
）×3]2 3
=12×[
×3]7 6
=12×7 2
=42；
81÷14+17×1 14
=81×
+17×1 14 1 14
=（81+17）×1 14
=98×1 14
=7；
×（3 5
+1 7
÷8 21
）2 3
=
×（3 5
+1 7
）4 7
=
×3 5 5 7
=
；3 7
×20082006 2007
=
×（2007+1）2006 2007
=
×2007+2006 2007
×12006 2007
=2006+2006 2007
=2006
．2006 2007