Answer:
4
Explanation:
When subtracting coefficients, the resultant coefficient of a term is the difference of the coefficients of the term in each polynomial
So the coefficient of x² when Polynomial 2 is subtracted from Polynomial 1 is just
(9-5 = 4
The resultant polynomial will have 4x² as one of the terms
The other terms subtracted need not be considered but here is the result
