Question

Rrzolvati in multimea numerelor reale ecuatia: 17xpatrat + 37ypatrat+ 48x•y-6x+ 4y +13=0

Answer 1

$17 x^{2} +37 y^{2} +48xy-6x+4y+13=0 \\ 16 x^{2} +36 y^{2}+48xy+ x^{2} + y^{2}-6x+4y+13=0 \\ (4x+6y)^2+(x-3)^2+(y+2)^2=0 \\ x=3;si:y=-2$