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I would try to factor it as (x^2+ax+b)(x^+cx+d) from which you get a=-c, a(d-b)=-72, a^2=b+d and bd=-17 which suggests that you should try b=-17, d=1 and b=17, d=-1. It is easy to see that the second possibility works with a=4.
That should work tooDo you remember all factoring/product formulae ?
I would try to factor it as (x^2+ax+b)(x^+cx+d) from which you get a=-c, a(d-b)=-72, a^2=b+d and bd=-17 which suggests that you should try b=-17, d=1 and b=17, d=-1. It is easy to see that the second possibility works with a=4.
That should work too
Do you remember all factoring/product formulae ?