x Turn on thread page Beta
 You are Here: Home >< Maths

1. I have been trying to do this Q for a while now and I cant get my head around what way to solve it even though it's only 2 marks, can someone please help??
Attached Images

2. (Original post by Carokelly123)
I have been trying to do this Q for a while now and I cant get my head around what way to solve it even though it's only 2 marks, can someone please help??
I believe
q = -1
p = -2
when so x = 0 y = -4.
3. (Original post by Carokelly123)
I have been trying to do this Q for a while now and I cant get my head around what way to solve it even though it's only 2 marks, can someone please help??
It's a quadratic in completed the square form. That is, the maximum point occurs at , alerntively:

, so the intersection with the x-axis is when .

You know that this point occurs at . So... . (i.e: your graph clearly shows that when y=0 (the x-axis), we have x=2)

Furthermore, you know that when we have that , so: where you substitute in your value for that you found above.
4. (Original post by Zacken)
It's a quadratic in completed the square form. That is, the maximum point occurs at , alerntively:

, so the intersection with the x-axis is when .

You know that this point occurs at . So... . (i.e: your graph clearly shows that when y=0 (the x-axis), we have x=2)

Furthermore, you know that when we have that , so: where you substitute in your value for that you found above.
therefore, q = -1 and p = -2, right? thanks for your various solutions/workings, I see you giving answers often
5. (Original post by theguywhosaidhi)
therefore, q = -1 and p = -2, right? thanks for your various solutions/workings, I see you giving answers often
No problem.

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: May 18, 2016
Today on TSR

### Any tips for freshers...

who are introverts?

### More snow?!

Discussions on TSR

• Latest
Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE