Question

Factorise by using suitable identity:
(a) 121-44y+4y²​

Answer 1

Answer:

(2y-11)2

Step-by-step explanation:

4y²+121-44y

=(2y)2 + (11)2-2(2y*11)

=(2y-11)2

Identity used a2+b2-2ab

= (a-b)2

Answer 2

Answer:

(2y-11)² identity used a²-2ab+b²