Question 1075591
The discrimant has to equal 0 for the roots to be the same
sqrt(b^2-4ac) becomes sqrt(c^2-4*9*c)=sqrt(c^2-36c)
That equals 0, so c^2-36c=0
c=0,36, and 0 isn't allowed
c=36
x^2+36x+324=0
This is (x+18)^2=0