Question

b²+c²+2bc-a²
Factorise :​

Answer 1

Answer:

(a+b+c)(b+c-a)

Step-by-step explanation:

(b+c)²-a²=(a+b+c)(b+c-a)

Answer 2

Answer:

a²-(b²-2bc+c²)

= a²+(b-c) ²

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

using identity

a²-b²=(a-b)

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