Question

Factorise :- 4a² - b²

Answer 1

Answer:

hello

Step-by-step explanation:

4a² can be also written as (2a)² if we take it common

now (2a)² and b² is there

apply formula a² -b² = (a+b)(a-b)

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

this is ur answer hope u got it

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Answer 2

Answer:- 2a-b) (2a+b)

{ using a² - b². = (a+b)(a-b) }

we know , (4a)² = 2a×2a.

I hope ure help it...