Question 13:
Solution:
![](http://spmaddmaths.blog.onlinetuition.com.my/wp-content/uploads/sites/3/2018/01/paper1-14-1024x829.png)
Solution:
![](http://spmaddmaths.blog.onlinetuition.com.my/wp-content/uploads/sites/3/2018/01/paper1-14-1024x829.png)
Question 14:
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:
![](http://spmaddmaths.blog.onlinetuition.com.my/wp-content/uploads/sites/3/2018/01/paper1-15-1024x764.png)
![](http://spmaddmaths.blog.onlinetuition.com.my/wp-content/uploads/sites/3/2018/01/paper1-15-1-1024x695.png)
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:
![](http://spmaddmaths.blog.onlinetuition.com.my/wp-content/uploads/sites/3/2018/01/paper1-15-1024x764.png)
![](http://spmaddmaths.blog.onlinetuition.com.my/wp-content/uploads/sites/3/2018/01/paper1-15-1-1024x695.png)
Question 15:
The straight line y = 5x – 1 does not intersect with the curve y = 2x2 + x + h.
Find the range of values of h.
Solution:
The straight line y = 5x – 1 does not intersect with the curve y = 2x2 + x + h.
Find the range of values of h.
Solution:
Question 16:
Find the range of values of p for which the equation has two real distinct roots.
Solution:
![](http://spmaddmaths.blog.onlinetuition.com.my/wp-content/uploads/sites/3/2018/01/paper1-10.png)
Find the range of values of p for which the equation has two real distinct roots.
Solution:
![](http://spmaddmaths.blog.onlinetuition.com.my/wp-content/uploads/sites/3/2018/01/paper1-10.png)