You are Here: Home >< Maths

# Stumped on a Q watch

1. Show that , when n is an integer, whose value is to be found.

I can't see how to do this without sqrting an "unfinished" bracket:

Sqrting the individual terms (I know is wrong) but would give .

Any clues would be greatly appreciated

*The answer booklet says n = 12
2. Huh?????

3. There you go!
4. 17^2 = 289

So you have root(288)
5. (Original post by McLH)
Sqrting the individual terms

This suggests that
6. (Original post by Mr M)

This suggests that
I know, tis why I said I knew it was wrong
7. What?! How do you guys do this!?
8. (Original post by Bexsqueak)
What?! How do you guys do this!?
How do we do what?
9. (Original post by McLH)
Show that , when n is an integer, whose value is to be found.

I can't see how to do this without sqrting an "unfinished" bracket:

Sqrting the individual terms (I know is wrong) but would give .

Any clues would be greatly appreciated

*The answer booklet says n = 12
10. (Original post by McLH)
Show that , when n is an integer, whose value is to be found.

I can't see how to do this without sqrting an "unfinished" bracket:

Sqrting the individual terms (I know is wrong) but would give .

Any clues would be greatly appreciated

*The answer booklet says n = 12

(Original post by Bexsqueak)
What?! How do you guys do this!?
Take the 17 inside the bracket (squaring it, as others have shown), then use difference of 2 squares to factorize what is now inside the brackets

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: December 31, 2012
Today on TSR

### Congratulations to Harry and Meghan!

But did you bother to watch?

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