Let α and β be the roots of the equation x² + px + q = 0. If α³ and β³ are the roots of the equation x² + mx + n = 0, then what is the value of m + n ?

Let α and β be the roots of the equation x² - ax - bx + ab - c = 0. What is the quadratic equation whose roots are a and b?

If the roots of the equation x² - ax - bx - cx + bc + ca = 0 are equal, then which one of the following is correct?