Question

Factorise
① x²+2xy + y² - 4
​

Answer 1

Answer:

(x+y-2)(x+y+2)

Step-by-step explanation:

= (x +y)^2 - 4

= (x+y)^2 - (2)^2 = (x+y-2)(x+y+2)

Answer 2

Step-by-step explanation:

x²+2xy+y²-4

=x²+y²+2xy-4

=(x+y)²-2²

=(x+y+2)(x+y-2)

hope this helps you