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
3
+(1-6)2

=3+1-12-3×

1
3
+(-5)2

=4-12-1+25

=-8-1+25

=16

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