Question

Factor x2 − 4x + 5.

Prime
(x + 5)(x − 1)
(x − 5)(x − 1)
(x + 5)(x + 1)

Answer 1

1) Prime
2) (x + 5)(x − 1) = x²-1x+5x-5= x²+4x-5
3) (x − 5)(x − 1)= x² -1x -5x +5= x² -6x +5
4) (x + 5)(x + 1) = x² +1x +5x+ 5x = x² +6x+5

It is 1) Prime