You are Here: Home >< Maths

# modulus equation watch

1. how would you solve:
4 - x^2 = I2X-1I
2. This is how I will solve this problem:

Sketch the graph y = |2x - 1|

Then solve 4 - x^2 = 2x - 1 for x > 0.5

and 4 - x^2 = - 2x + 1 for x < 0.5
3. I didnt really understand that. Is there an easier way?
4. Thats probably the best way;

4 - x^2 = |2x-1| for x>0.5

we just solve 4-x^2 = 2x-1 since for x>0.5 |2x-1| = 2x-1

Then for x<0.5 solve 4-x^2 = -2x + 1 since|2x-1| = -2x+1 for x<0.5

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: October 15, 2006
Today on TSR

### Cambridge interviews

Find out which colleges are sending invitations

### University open days

• University of East Anglia
Fri, 23 Nov '18
• Norwich University of the Arts
Fri, 23 Nov '18
• Edge Hill University
Sat, 24 Nov '18
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