Expand. Your answer should be a polynomial in standard form. (x-9)(x+2)
Expanding the given expression (x-9)(x+2):
Using the FOIL method (First, Outer, Inner, Last), we multiply the first terms, the outer terms, the inner terms, and the last terms respectively:
(x-9)(x+2) = x*x + x*2 - 9*x - 9*2
Simplifying the expression:
= x^2 + 2x - 9x - 18
Combining like terms:
= x^2 - 7x - 18
The expanded form of (x-9)(x+2) is x^2 - 7x - 18.