Question

Find x,y

a) x2 – 4x + y2 – 6y + 8 = 0.
b) x2 + 2y2 + 2xy + 4y = 6.
c) x2 – 3x + y2 – 6y + 10 = 0

Answer 1

Explanation:

a)x = 2 - sqrt(-y^2 + 6 y - 4) or x = sqrt(-y^2 + 6 y - 4) + 2

b)

c)x = 1/2 (3 - sqrt(-4 y^2 + 24 y - 31)) or x = 1/2 (sqrt(-4 y^2 + 24 y - 31) + 3)