(4x-2y-1)²+√xy-2=0,求4x²y-4x²y²+xy²
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(4x-2y-1)²+√xy-2=0,求4x²y-4x²y²+xy²(4x-2y-1)²+√xy-2=0,求4x²y-4x
(4x-2y-1)²+√xy-2=0,求4x²y-4x²y²+xy²
(4x-2y-1)²+√xy-2=0,求4x²y-4x²y²+xy²
(4x-2y-1)²+√xy-2=0,求4x²y-4x²y²+xy²
我考高中的时候,好像就有这题
-2在什么地方?根号里面还是外面?根号内(4x-2y-1)²+√(xy-2)=0 4x-2y-1=0,xy-2=0 将x=2/y代入4x-2y-1=0得:4x-4/x-1=0 4x^2-x-4=0 8/y-2y-1=0或:8-2y^2-y=0,2y^2+y-8=0 解得:y=(-1±√65)/4 4x²y-4x²y²+xy² =xy...
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-2在什么地方?根号里面还是外面?
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