已知:|a-b+1|+√2a-3b-4=0,求4a+b∧2
1个回答
|a-b+1|+√2a-3b-4=0
则 a-b+1=0,
b-a=1 (1)
2a-3b-4=0,
2a-3b=4 (2)
(1)*2+(2)得
b=-6,a=-7
4a+b^2=-28+36=8
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