a,b满足|a+1|+(b-2)²=0,则a=-1,b=2
所以:
5ab²-{2a²b-3【ab²-2(2ab²+a²b】)}
=-20-{4-3【-4-2(-8+2】)}
=-20-{4-3【-4-2(-6】)}
=-20-{4-3【-4+12】}
=-20-{4-3【8】}
=-20-{4-24}
=-20+20
=0
a,b满足|a+1|+(b-2)²=0,则a=-1,b=2
所以:
5ab²-{2a²b-3【ab²-2(2ab²+a²b】)}
=-20-{4-3【-4-2(-8+2】)}
=-20-{4-3【-4-2(-6】)}
=-20-{4-3【-4+12】}
=-20-{4-3【8】}
=-20-{4-24}
=-20+20
=0