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**Daniel123****Member**- Registered: 2007-05-23
- Posts: 663

Helloo all

I have an exam this morning (yes, on my first day back at school!), so I would really appreciate a quick response!

I would just like to clarify:

On a "simplify these expressions" indices question, should the final answer be left as:

?Thanks!

*Last edited by Daniel123 (2007-09-02 20:01:57)*

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**luca-deltodesco****Member**- Registered: 2006-05-05
- Posts: 1,470

i would say 2x^-6 but it shouldn't matter for that

The Beginning Of All Things To End.

The End Of All Things To Come.

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**Daniel123****Member**- Registered: 2007-05-23
- Posts: 663

Thanks... and for the fast answer

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**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

I'd say

personally, but as luca says it doesn't matter. Just go with your preference.Why did the vector cross the road?

It wanted to be normal.

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**Identity****Member**- Registered: 2007-04-18
- Posts: 934

Fussy teachers will prefer

, I lost a ridiculous mark in a test because I had negative indices.Offline

**Ricky****Moderator**- Registered: 2005-12-04
- Posts: 3,791

Fussy teachers will prefer

I would replace "fussy" with "wrong", but perhaps it's just me.

"In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..."

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**Monox D. I-Fly****Member**- Registered: 2015-12-02
- Posts: 973

Ricky wrote:

Fussy teachers will prefer

I would replace "fussy" with "wrong", but perhaps it's just me.

Maybe the teacher is just someone with OCD who can't bear to see negative numbers.

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