Question 1004962
We have to square a trinomial and then subtract the result from 9...
9 - (x^2-3x-1)^2 =
9 - (x^4 - 6x^3 + 7x^2 + 6x + 1) =
-x^4 + 6x^3 - 7x^2 - 6x + 8