[" 3.If "5x^(2)-4xy+y^(2)-2x+1=0" ,then ...

[" 3.If "5x^(2)-4xy+y^(2)-2x+1=0" ,then the value of "x" and "y],[[" are "," (a) "x=2,y=1],[[" (a) "x=1,y=2," (c) "7145],[" (c) "x=1,y=-1," (d) "x=-1,y=1]]]

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