Question 744099
Write the standard for equation of an ellipse.
1. x^2+4y^2-6x-64y+165=0 
complete the square:
x^2-6x+4y^2-64y+165=0
(x^2-6x+9)+4(y^2-16y+64)=-165+9+256
(x-3)^2+4(y-8)^2=100
{{{(x-3)^2/100+(y-8)^2/25=1}}}