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Algebraic fractions

Hi, I'm a bit unsure how to answer these questions so I thought I'd ask...

4/2x+4 do I just half everything to make 2/x+2 ?

or is there more to be done ? Thanks :smile:
Original post by azo
Hi, I'm a bit unsure how to answer these questions so I thought I'd ask...

4/2x+4 do I just half everything to make 2/x+2 ?

or is there more to be done ? Thanks :smile:


No, that's it. Next time you need to be clearer about the denominator of the fraction.

You meant 42x+4\frac{4}{2x+4} not 42x+4\frac{4}{2x}+4
Reply 2
Avatar for azo
azo
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Original post by Mr M
No, that's it. Next time you need to be clearer about the denominator of the fraction.

You meant 42x+4\frac{4}{2x+4} not 42x+4\frac{4}{2x}+4


Okay thanks... but what about 25x−2\frac{2}{5x-2} ?? As 5 and 2 don't have any common factors
Original post by azo
Okay thanks... but what about 25x−2\frac{2}{5x-2} ?? As 5 and 2 don't have any common factors


That can't be simplified.
Reply 4
Avatar for azo
azo
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Original post by Mr M
That can't be simplified.


Thanks, but are you sure? The phrasing of the questions strongly implied it was possible ..?
Original post by azo
Thanks, but are you sure? The phrasing of the questions strongly implied it was possible ..?


What is the question exactly
Original post by azo
Thanks, but are you sure? The phrasing of the questions strongly implied it was possible ..?


If the question was as stated I'm sure. Post a scan/photo if you want us to investigate further.
Reply 7
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azo
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Original post by TenOfThem
What is the question exactly


"Simplify all of the following expressions", and then this was the last one.
Original post by azo
"Simplify all of the following expressions", and then this was the last one.


It cannot be simplified
Reply 9
Avatar for Notnek
Notnek
21
Original post by azo
"Simplify all of the following expressions", and then this was the last one.

In a simplifying exercise, it's common that an expression is included that can't be simplified to make sure you can recognise simplified expressions.

Or there's a typo.
Reply 10
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azo
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Original post by notnek
In a simplifying exercise, it's common that an expression is included that can't be simplified to make sure you can recognise simplified expressions.

Or there's a typo.


Okay I guess that makes sense, thanks !

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