Question

What is the factorization form of a2 – 4? (a) (a – 2)2 (b) (a – 2)(a – 2) (c) (a + 2)2 (d) (a + 2)(a – 2)​

Answer 1

correct answer is Correct option is

a2+b2-ab

hope it helps

Answer 2

Answer:

Option (d) : (a+2)(a-2)

Step-by-step explanation:

FORMULA USED:  $x^{2} - y^{2} = ( x + y ) ( x - y )$

⇒$a^{2} - 4^{2} = a^{2} - 2^{2}$

⇒$a^{2} - 2^{2} = ( a + 2 ) ( a - 2 )$