Yes, it is a factor.
Let us quickly perform a synthetic synthetic division to determine whether x+9 is a factor of
We perform the synthetic division as shown in attachment.
Since the remainder is zero, x+9 is a factor of p(x).
From the results of our division, the quotient is :
Therefore the polynomial as a product of two factors is:
Directrix: y = -7
you have to find the multiplier that gets 3 to equal 60, that would be 20
therefore, you then multiply the numerator by 20 also and get 40
the quotient is 17