x^2+4y^2+2x-4y+2=0
(x+1)^2+(2y-1)^2=0
x+1=0,2y-1=0
x=-1,y=1/2
√5x^2+16y^2=√(5*(-1))^2+16*(1/2)^2
=5+16*1/4
=5+4=9