Question

http://prntscr.com/1fuyo8

Answer 1

x^2-6x+5

Answer 2

You can tell from the graph that the parabola has roots 1 and 5. If you know that "n" is a root of the equation, then (x-n) must be a factor of the equation. So, since 1 and 5 are our roots, the factorization must be
(x-1)(x-5)

Answer 3

Thanks.

Answer 4

You're welcome, glad I could help