Question

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

Answer 1

Answer:

-(3a+b)(a+b)

Step-by-step explanation:

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

a=a

b=2a+b

(a+2a+b)(a-(2a+b)) = (3a+b)(-a-b)=-(3a+b)(a+b)

hope this helps

Answer 2

Step-by-step explanation:

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

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

(3a+b) ( a-2a-b)

(3a+b) ( -a-b)