Question

Which of the binomials below is a factor of this trinomial x^2-5x+4

A/x-1
B/x+1
C/x+4
D/x^2+4
Please explain

Answer 1

A.

Explanation:

X^2-5x+4

using "X" method you get out -4 and -1. (which make -5)

then plug that back in and you get:

(x-4) (x-1)=0

x=4

x=1