Question

Factorise (a+b)² - (b-a)²​

Answer 1

Answer:

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

=( a+b +b-a) (a+b-b+a)

= (2b) (2a)

= 4ab

Answer 2

(a+b)² - (b-a)²

ID: (a)² - (b)² = (a + b) (a - b)
Here our ‘a’ is (a + b) and ‘b’ is (a - b)

= [(a + b) + (b - a)] [{a + b) - (b - a)]
= [a + b + b - a] [a + b - b - a]
= (2b) (2a)
= 4ab

Hope it helps you
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