问题
解答题
计算;-12009×(-3)+1-22×3+(1-22)÷3+(1-2×3)2.
答案
原式=-1×(-3)+1-4×3+(1-4)×
+(1-6)21 3
=3+1-12-3×
+(-5)21 3
=4-12-1+25
=-8-1+25
=16
计算;-12009×(-3)+1-22×3+(1-22)÷3+(1-2×3)2.
原式=-1×(-3)+1-4×3+(1-4)×
+(1-6)21 3
=3+1-12-3×
+(-5)21 3
=4-12-1+25
=-8-1+25
=16