Which of the following quadratic expressions is factorable over the integers? Select all that apply.

(3 points)
Responses

x^2−6x+36

x^2−10x+25

16x^2+36x+81

4x^2−49

4x^2+12x+9

1 answer

x^2−6x+36
x^2−10x+25
4x^2+12x+9