we can see that
the above curve is parabola
so, firstly , we can find vertex
vertex is (4,0)
[tex] (h,k)=(4,0) [/tex]
now, we can use vertex formula of parabola
[tex] y=(x-h)^2+k [/tex]
we can plug h and k
and we get
[tex] y=(x-4)^2+0 [/tex]
so, we can factor it as
[tex] y=(x-4)(x-4) [/tex]............Answer