Question

Give the expansion of (x+y) cube

Answer 1

${x}^{3} + 3 {x}^{2} y + 3x {y}^{2} + {y}^{3}$
Hope this helps.

Answer 2

Hey friend,
Here is the answer you were looking for:
$(x + y)^{3}$

Using the identity :

${(a + b)}^{3} = {a}^{3} + {a}^{3} + 3ab(a + b)$

$= {x}^{3} + {y}^{3} + 3xy(x + y) \\ \\ {x}^{3} + {y}^{3} + 3 {x}^{2} y + 3x {y}^{2}$

Hope this helps!!

If you have any doubt regarding to my answer, feel free to ask in the comment section or inbox me if needed.

@Mahak24

Thanks...
☺☺