Find the standard form of the equation of the circle.

Question

3(x+2)^2 + 3(y-1)^2=18

so i used this formula
r^2 = (x+h^)2 + 3(y+k)^2

i just plug in the number but what do i do with the 3's outside of the parenthesis or i have to do something else...

Answer 1

divide each side by 3 to get standard form.