Question

find the binomial which is common factor of:
121 - 25m^2 , 25m^2 + 55m +121​

Answer 1

121-25m² have a factor is :

121-25m2

(11)²-5²m²

(11)²-(5m)²

(11+5m)(11-5m)

if you want to find factors of second one it comes in imaginary number and no one factor is same so the common factor is 1