Question

5 (vi) xy (x + y + y2); x = 2, y = 2 4 2.​

Answer 1

Step-by-step explanation:

(x+y)(x

2

−xy+y

2

)

=x(x

2

−xy+y

2

)+y(x

2

−xy+y

2

)

=x

3

−x

2

y+xy

2

+x

2

y

−

xy

2

+y

3

=x

3

+y

3