问题
填空题
化简求值:
|
答案
(8
-41 2
+21 4
) ÷ 1 8 1 7 (8
-43 4
)×33 8 2 5
=(
-17 2
+17 4
) ×7 17 8 (
-35 4
) ×35 8 17 5
=17×7×(
-1 2
+1 4
) 1 8 35×
×(17 5
-1 4
) 1 8
=17×7× 3 8 17×7× 1 8
=3.
故答案为:3