Question

A equação de x2+y2+4x-10y+25=0​

Answer 1

x² + y² + 4x - 10y + 25 = 0

(x )² + ( y )² = - 25

(x + 4/2)² + (y -10/2)² = -25

(x + 2 )² + ( y - 5)² = -25

(x + 2 )² + (y - 5)² = -25 + 2² + 5²

(x + 2 )² + (y - 5)² = 2²

(x + 2 )² + (y - 5)² = 4