Hello here is a solution : x²-8y-6x+y²=4....(1) A) x²-6x = x²-2(3)x+9-9 = x²-2(3)x+3²-9 x²-6x =(x-3)² -9 B) y²-8y = y²-2(4)y +4²-16 y²-8y = (y-4)²-16 C) in (1) :
(x-3)² -9 +(y-4)²-16 = 4 (x-3)² +(y-4)² = 29 ...<span>is the standard form of the equation