Question

sita told that x4-y4 is divided with (x2+y2)the answer is x2-y2 it is correct or not justify your answers

Answer 1

(x2+y2)(x2-y2)
=x2(x2-y2)+y2(x2-y2)
=x4-x2y2+x2y2-y4
=x4-y4
this is the answer of your question