Question

Express the polynomial as a product of linear factors.

f(x) = x^3- 5x^2 – 18x+72
A. (x-3)(x + 4)(x-6)
B. (x-2)(x+6)(x-6)
c. (x-3)(x+3)(x-8)
D. (x-4)(x+3)(x + 2)

Answer 1

(x-3)(x+4)(x-6) =A

Explanation:

f(3)=27-45-54+72=0

f(6)=0

so (x-3)(x+4)(x-6)