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)/2 2)(x³-y³)/(x²-y²)=(x-y)(x²+xy+q²)/(x+y)(x-y)= =(x²+xy+y²)/(x+y)