Let PQR be a right angled isosceles triangle right angled at P 2 1 If the equation of the line QR is...........

Let PQR be a right-angled isosceles triangle right-angled at P(2, 1). If the equation of the line QR is 2x + y =3, then the equation representing the pair of lines PQ and PR is

3x³-3²+8xy+20x+10y +20=0

3x³-3²?+8xy+20x-10y -20=0