You are Here: Home >< Maths

# Maths Help

Announcements Posted on
Why bother with a post grad? Are they even worth it? Have your say! 26-10-2016
1. I'm unsure how to answer this question can someone explain it to me?

Find the range of values of p for which the roots of the equation px^2 + px - 2 =0

Apparently the answers are: p < or equal to -8 or p > or equal to 0
2. (Original post by __jessxo)
I'm unsure how to answer this question can someone explain it to me?

Find the range of values of p for which the roots of the equation px^2 + px - 2 =0

Apparently the answers are: p < or equal to -8 or p > or equal to 0
Think about how many distinct roots a quadratic equation can have- you should know that it's either 0, 1 or 2. The question is asking when the equation has any roots, so either one or two. What condition is true for an equation to have one or two roots- hint: it relates to the discriminant.

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: October 9, 2016
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:
Today on TSR

### Who is getting a uni offer this half term?

Find out which unis are hot off the mark here

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read here first

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams