Question

what must be added to x^2+xy+y^3 to form x^3+y^3

Answer 1

$\textbf{\huge{ANSWER:}}$

Let the value be = z

$= > {x}^{2} + xy + {y}^{3} + z = {x}^{3} + {y}^{3} \\ \\ = > {x}^{2} + xy + z= {x}^{3} + {y}^{3} - {y}^{3} \\ \\ = > {x}^{2} + xy + z= {x}^{3} \\ \\ = > z = {x}^{3} - {x}^{2} - xy$