1 . x2-y2 , x+y2 , x3+y3

• A. $x-y$
• B. $x+y$
• C. $\left(x^2-y^2\right)\left(x^3+y^3\right)$
• D. $\left(x-y\right){\left(x+y\right)}^2\left(x^2-xy+y^2\right)$

Answer: Option B

Explanation: