I didn't get all the part with the tiles, but here's the general answer:
given a polynomial

we have that
is a factor of
if and only if k is a root of
, i.e. if

So, given the polynomial

We can check if
is a factor by evaluating
:

So,
is not a factor.
Similarly, we can evaluate
to check if
are factors:

So, only
is a factor of 
Answer:
of wht?....................
Answer:
7
Step-by-step explanation:
Answer:
10.91
Step-by-step explanation:
.67×8=5.36+5.55=10.91