• 1. If the distinguished root of the quadratic equation is zero, then the equation of
•  two complex roots have 
•  two real roots yen 
•  one real root 
•  one complex root

3. If f is a constant coupling and the number of elements of its field is 7, then the number of elements of its range is equal14. If the father is 28 years older than his son and their total age is now 50 years, then the father’s age in years is now equal to

1.