Răspuns :
formam binoame cu 17 = 1 + 16
( x² - 2x + 1) + ( y² + 2·4y + 4² ) = 0
( x - 1)² + ( y + 4)² = 0 daca
x -1=0 ; x =1
y + 4 = 0 ; y = -4
( x² - 2x + 1) + ( y² + 2·4y + 4² ) = 0
( x - 1)² + ( y + 4)² = 0 daca
x -1=0 ; x =1
y + 4 = 0 ; y = -4
x²– 2x +y²+ 8y + 17 = 0
(x²-2x+1)+(y²+8y+16)=0
(x-1)²+(y+4)²=0=>x=1,y=-4.
(x²-2x+1)+(y²+8y+16)=0
(x-1)²+(y+4)²=0=>x=1,y=-4.