5ab²-丨2a²b-{3ab²-(4ab²-2ab²)}的值a,b其中满足丨a-2丨+3(b+1)²=0
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5ab²-丨2a²b-{3ab²-(4ab²-2ab²)}的值a,b其中满足丨a-2丨+3(b+1)²=0
5ab²-丨2a²b-{3ab²-(4ab²-2ab²)}的值a,b其中满足丨a-2丨+3(b+1)²=0
5ab²-丨2a²b-{3ab²-(4ab²-2ab²)}的值a,b其中满足丨a-2丨+3(b+1)²=0
丨a-2丨+3(b+1)²=0
所以a-2=0,b+1=0
a=2,b=-1
5ab²-丨2a²b-{3ab²-(4ab²-2ab²)}|
=5ab²-2a²b+{3ab²-(4ab²-2ab²)}
=5ab²-2a²b+3ab²-(4ab²-2ab²)
=8ab²-2a²b-4ab²+2ab²
=4ab²
=4*2*(-1)²
=8