Which of the following are the factors of
x2+4(x−3)
(x + 6)
(x - 6)
(x + 2)
(x - 2)
⇒x2+4(x−3)
⇒x2+4x−12
⇒x2−2x+6x−12
⇒x(x−2)+6(x−2)
⇒(x+6)(x−2)
(x+6)(x-10) are the factors of x2−4x−60
The common factor(s) of x2+4x+4 and x2-4 is/ are