If open paren x minus 9 close paren is a factor of x squared minus 5 x minus 36 , what is the other factor?
Answer
A
open paren x plus 4 close paren
B
open paren x minus 6 close paren
C
open paren x plus 6 close paren
D
open paren x minus 4 close paren
Explanation
To find the other factor, divide x² − 5x − 36 by the known factor (x − 9). The result is x + 4, since (x − 9)(x + 4) = x² − 5x − 36. So the other factor is (x + 4), choice A.
AI-written and checked against the verified answer.