Question

Answer 1

`a)(x+y)^2=x^2+2xy+y^2`

`b)(x-y)^2=x^2-2xy+y^2`

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

Answer 2

a: \(=x^2+2xy+y^2\)

b: \(=x^2-2xy+y^2\)

c: \(=x^2-y^2\)

Answer 3

`a, (x+y)^2`

`= x^2 +2xy+y^2`

`b, (x-y)^2`

`= x^2 - 2xy + y^2`

`c, (x-y)(x+y)`

`=x^2-y^2`

Answer 4

`(x+y)^2 = x^2 + 2xy + y^2`

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

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