Answer:
(x+4)(x+2)
You need to find something that multiplies to get 8, but adds up to equal 6.
4 x 2=8
4+2=6
so, the two numbers will be 4 and 2.
Since x^2 can be x and x, these will be in the polynomial as well.
So, the polynomial will be (x+4)(x+2)