Question 11:
The quadratic equation , where p is a constant, has two equal roots. Calculate the possible values of p.
Solution:

The quadratic equation , where p is a constant, has two equal roots. Calculate the possible values of p.
Solution:

Question 12:
Find the range of values of k for which the equation has no real roots.
Solution:

Find the range of values of k for which the equation has no real roots.
Solution:

Question 13:
Find the range of values of p for which the equation has no real roots.
Solution:

Find the range of values of p for which the equation has no real roots.
Solution:

Question 14:
Solution:

Solution:

Question 15:
The quadratic equation has roots –2 and 6. Find
(a) the value of p and of q,
(b) the range of values of r for which the equation has no real roots.
Solution:


The quadratic equation has roots –2 and 6. Find
(a) the value of p and of q,
(b) the range of values of r for which the equation has no real roots.
Solution:

