Question

$circumference\:x^2-6x+8y+y^2=0$

solve

Answer 1

Answer:

x^2-6x+8y+y^2=0

x(x-6)+y(y+8)=0

Answer 2

$\mathrm{Circle\:circumference\:given}\:x^2-6x+8y+y^2=0:\quad C=10\pi$

$\mathrm{Circle\:circumference}$

$C=2\pi r$

$\mathrm{Circle\:radius\:given}\:x^2-6x+8y+y^2=0:\quad r=5$

$C=2\pi 5$

$C=10\pi$