Question

5.Factorise the following:​

Answer 1

Step-by-step explanation:

i)(x+y)²-z²

(x+y+z)(x+y-z)

ii)(x-y)²-z²

(x-y+z)(x-y-z)

iv)a²-(b²-2bc+c²)

a²-(b²-c²)

a²-(b-c)²

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

iii)a²-(b²+c²+2bc)

a²-(b+c)²

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

v)(x-1)(x+1)-a(2+a)

-a(x-1)(x+1)(2+a)

vi)by using this formula:(x²-xy+y²)(x²+xy+y²)

I don't know other answers sorry