сократить дробь:
а)p^3+q^3
=
2p+2q

б)x^3-y^3
=
x^2-y^2

1)(p³+q³)/(2p+2q)=(p+q)(p²-pq+q²)/2(p+q)==(p²-pq+q²)/22)(x³-y³)/(x²-y²)=(x-y)(x²+xy+q²)/(x+y)(x-y)==(x²+xy+y²)/(x+y)