Question

(x-y)^3=x^3-y^3-3xy (x-y)=x^3-y^3-3x^2y+3xy^2​

Answer 1

x

3

+3x

2

y+3xy

2

+y

3

−8

x+y)

3

−8

(x+y)

3

−2

3

(x+y−2){(x+y)

2

+2(x+y)+2

2

}

(x+y−2)(x

2

+y

2

+2x+2y+4+xy)