Question

What is the LCD??????????

Answer 1

`x^3+y^3=(x+y)(x^2-xy+y^2)\\\\ \text{lcd}\left((x)/(x+y),(x)/(x^3+y^3)\right)=\text{lcm}(x+y,x^3+y^3)=(x+y)(x^2-xy+y^2)=\\ =x^3+y^3`