1. 
Find the range of values of for which the quadratic equation


has 

(a) two real roots, 

(b) one real root, 

(c) no real root. 

2. 
Solve the inequality 

3.  Given that, 3 and 4 are roots of a quadratic equation. Find the quadratic 

equation. 

4.  
5.  (a) Find the range of x for which 

(b) The straight line
does not intersect with the curve Find the range of c. 

6.  Given that and
are
the roots of the equation ,
where 

,
find 

(a) the values of and , 

(b) the quadratic equation with roots of 

7.  