Question

Factorize = a²- b²- 4a + 4​

Answer 1

Step-by-step explanation:

a²-b²-4a+4

(a²-4a+4)-b²

[(a)²-(2×a×2)+(2)²]-(b)²

(a-2)²-(b)²

(a-2-b)(a-2+b)

Answer 2

Answer:

Option B.

Step-by-step explanation:

The trinomial =a2^4a+4

a^2-b^2-4a+4=(a^2-4^a+4)-b^2

(a^2-2a-2a+4)-b^2

a(a-2)-2(a-2)b^2

(a-2)^2-b^2

(a-2+b)(a-2-b)