The Student Room Group
Uni students - Complete our survey >>
Uni students - Complete our survey >>
Uni students - Complete our survey >>

This discussion is now closed.

Check out other Related discussions

Indicies :)

Hi, need some help, pretty basic stuff, but still stuck :p:

52x−2\frac{5}{2}x^{-2} becomes 52x−2\frac{5}{2x^{-2}}
I'm supposed to write 52x−2\frac{5}{2}x^{-2} in the form of roots or fractions or both... but I'm a bit unsure of a how to get there.


Thank you for any help :yep:
Reply 1
Avatar for My Alt
My Alt
12
Do you mean 52x−2\frac{5}{2}x^{-2} or 52x−2\frac{5}{2x^{-2}}?
Reply 2
Avatar for Dr Acula
Dr Acula
OP
3
My Alt
Do you mean 52x−2\frac{5}{2}x^{-2} or 52x−2\frac{5}{2x^{-2}}?

The first one, sorry its a bit messy :s-smilie:
Reply 3
Avatar for My Alt
My Alt
12
Well, surely you've already answered the question, in your second line???
Reply 4
Avatar for Dr Acula
Dr Acula
OP
3
My Alt
Do you mean 52x−2\frac{5}{2}x^{-2} or 52x−2\frac{5}{2x^{-2}}?

Basically what do I have to do to the first one to make it the second one?
Reply 5
Avatar for My Alt
My Alt
12
You don't. Look what you said in the second line.

52×x−2=52×1x2\frac{5}{2} \times x^{-2} = \frac{5}{2} \times \frac{1}{x^2}...
Reply 6
Avatar for Dr Acula
Dr Acula
OP
3
My Alt
Well, surely you've already answered the question, in your second line???

No, I have the answers, I couldn't do it, so i looked :colondollar:
Reply 7
Avatar for Rosh_123
Rosh_123
10
2 x^-2 = 1/x^2, so 5/2 x^-2 = 5 x 1/x^2 = 5 / 2x^2
Reply 8
Avatar for Dr Acula
Dr Acula
OP
3
My Alt
You don't. Look what you said in the second line.

52×x−2=52×1x2\frac{5}{2} \times x^{-2} = \frac{5}{2} \times \frac{1}{x^2}...

Thank you for clearing that up :colondollar:

Feel really stupid now :o:
Reply 9
Avatar for My Alt
My Alt
12
No problem =)

Related discussions

Latest

Trending

Trending

Articles for you