已知(A+B)²+|2B-1=0,则6AB-2AB-3(AB-1)=

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已知(A+B)²+|2B-1=0,则6AB-2AB-3(AB-1)=已知(A+B)²+|2B-1=0,则6AB-2AB-3(AB-1)=已知(A+B)²+|2B-1=0,

已知(A+B)²+|2B-1=0,则6AB-2AB-3(AB-1)=
已知(A+B)²+|2B-1=0,则6AB-2AB-3(AB-1)=

已知(A+B)²+|2B-1=0,则6AB-2AB-3(AB-1)=
の希の望
∵(A+B)²+|2B-1|=0
且(A+B)²≥0,|2B-1|≥0
∴A+B=0,2B-1=0
解得A=-1/2,B=1/2
∴6AB-2AB-3(AB-1)
=6AB-2AB-3AB+3
=AB+3
=-1/4+3
=11/4