Polynomial Identities and Proofs

How to solve for this problem with every step?
x and y

y^3+x^2=(y+x)(y^3-yx+x^3)

Which polynomial equation of least degree has -2, -2, 3, and 3 as four of its roots? (x + 2)(x - 3) = 0 (x - 2)-2(x + 3)3 = 0 (x-2 + 2)(x2- 3) = 0 (x + 2)2(x - 3)2 = 0

Can you divide 25 into 4 equal groups? explain why or why not.

What is ha theorem a special case of?