已知;|3a-b+1|+(2a-b)^2=0,求b^2/a+b除(b/a-b乘ab/a+b)的值

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已知;|3a-b+1|+(2a-b)^2=0,求b^2/a+b除(b/a-b乘ab/a+b)的值
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已知;|3a-b+1|+(2a-b)^2=0,求b^2/a+b除(b/a-b乘ab/a+b)的值
已知;|3a-b+1|+(2a-b)^2=0,求b^2/a+b除(b/a-b乘ab/a+b)的值

已知;|3a-b+1|+(2a-b)^2=0,求b^2/a+b除(b/a-b乘ab/a+b)的值
根据已经条件,可以列出方程:3a-b+1=0;2a-b=0
解方程组,得到:a=-1,b=-2
化解所求式,b^2/(a+b)÷〖b/(a-b)*ab/(a+b)〗=1÷〖a/(a-b)〗=1-(b/a)
带入a,b的值,原式=1-(-2/-1)=-1

3a-b+1=0
2a-b=0
则a=-1,b=-2
[b^2/(a-b)]/{[b/(a-b)][ab/(a+b)]}
=[b^2/(a-b)][(a-b)^2/(ab^2)]
=(a-b)/a
=(-1+2)/(-1)
=-1