深圳家居广场:8x-2y=5/2x+1
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快来啊,帮帮忙
x.y满足11x-4y=2即可
8x-2y=5/2x+1
1/4(x+y)+1/2(x+y)*(x+y)>=x*根号y+y*根号x
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2/(x-y)+x/y-1/x
x^2+y^2+1/2=x+y,则x= ,y= .
x-y=1,x^2-y^2+3x-5y的值
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