Question

If x=1,y=2 is a solution of the equation
A^2x+A^2=3,then the value of A

Answer 1

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