1) p^2 + pq - 2q^2 = (p - q)(p + 2q)
2) 2m - m^2 - 1 + n^2 = -(m - 1)^2 + n^2
3) y^3 - 5y^2 - 2y + 16 = (y - 2)(y^2 - 3y - 8)
1) p^2 + pq - 2q^2 = (p - q)(p + 2q)
2) 2m - m^2 - 1 + n^2 = -(m - 1)^2 + n^2
3) y^3 - 5y^2 - 2y + 16 = (y - 2)(y^2 - 3y - 8)