If x=1,y=2 is a solution of the equation
A^2x+A^2=3,then the value of A
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put x=1 & y= 2 in the given equation
A^2+2A-3=0
A^2+3A-A-3=0
A(A+3) -1(A+3)=0
A=-3 ,A= 1
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