5ab-2a²+[3ab-2(4ab²-a²b)]其中a,b满足|a-1|+(b-2)²=0

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5ab-2a²+[3ab-2(4ab²-a²b)]其中a,b满足|a-1|+(b-2)²=0

5ab-2a²+[3ab-2(4ab²-a²b)]其中a,b满足|a-1|+(b-2)²=0
5ab-2a²+[3ab-2(4ab²-a²b)]其中a,b满足|a-1|+(b-2)²=0

5ab-2a²+[3ab-2(4ab²-a²b)]其中a,b满足|a-1|+(b-2)²=0
|a-1|大于等于0 (b-2)²大于等于0
a,b满足|a-1|+(b-2)²=0
所以a-1=0 b-2=0
a=1 b=2
5ab-2a²+[3ab-2(4ab²-a²b)]
=10-2+[6-2(16-2)]
=10-2+(6-28)
=10-2-22
=-14