You are Here: Home >< Maths

# Help needed with a discriminant question (Pure Maths) Watch

1. The quadratic y = kx2 - 2 + kx + x has discriminant equal to -24. How do I find the value of k?

So far, I got:
a = k
b = k +1
c = -2
2. (Original post by honour)
The quadratic y = kx2 - 2 + kx + x has discriminant equal to -24. How do I find the value of k?

So far, I got:
a = k
b = k +1
c = -2
Discriminant =
3. (Original post by NotNotBatman)
Discriminant =
Are my values for a, b and c right though?
4. (Original post by honour)
Are my values for a, b and c right though?
Yes.
5. (Original post by NotNotBatman)
Yes.
Okay thanks

Updated: October 12, 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

### Grade boundaries not out until results day

What does this mean for you?

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