Fractions
Maths and statistics discussion, revision, exam and homework help.
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Re: FractionsSo would it be -6/4(Original post by notnek)
i) That's incorrect. Any number to the power of 0 is equal to 1.
ii) Correct.
iii) Use the index law:
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Re: FractionsTwo negatives make a plus (it should be +6/4 in the exponent).(Original post by zed963)
So would it be -6/4 -
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Re: FractionsSo whats 16^6/4(Original post by f1mad)
Two negatives make a plus (it should be +6/4 in the exponent). -
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Re: FractionsRemember,(Original post by zed963)
So whats 16^6/4
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Re: Fractions16^(6/4)= 16^(3/2)(Original post by zed963)
So whats 16^6/4 -
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Re: FractionsRaise both sides to the power of 6/4.(Original post by zed963)
I don't understand what u mean here. -
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Re: Fractions(Original post by zed963)
I don't understand what u mean here.
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Re: FractionsWe have got(Original post by zed963)
I would like you to explain why you are doing the things.
Now we need to simplify it further, so we will notice that,
Hence,
Now use the rule,
Do you get it? -
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Re: FractionsThe answer is 64.(Original post by zed963)
would the answer be 18 by any chance? -
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Re: FractionsYou seem to be struggling so I'll show you an alternative method that you may be more used to:(Original post by zed963)
I would like you to explain why you are doing the things.
Raising a number to the power of
is the same as square-rooting it (the 2 on the denominator tells you this) and then cubing it (from the numerator). So you get:
Last edited by notnek; 02-05-2012 at 17:46. -
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Re: FractionsIts just that we've been taught using a different method.(Original post by notnek)
You seem to be struggling so I'll show you an alternative method that you may be more used to:
Raising a number to the power of is the same as squaring it (the 2 on the denominator tells you this) and then cubing it (from the numerator). So you get:
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Re: FractionsDo you understand the method I gave? Which method have you been taught?(Original post by zed963)
Its just that we've been taught using a different method. -
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Re: FractionsI've been taught that you have 4 boxes and all those 4 boxes multiplied by something that has to = 16 and now since its asking for 6 we would just multiply the number inside the box to the power of 6.(Original post by notnek)
Do you understand the method I gave? Which method have you been taught?
4 boxes come from the denominator of 6/4 -
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Re: FractionsThis seems very odd. Show your method and perhaps we can make sense of it.(Original post by zed963)
I've been taught that you have 4 boxes and all those 4 boxes multiplied by something that has to = 16 and now since its asking for 6 we would just multiply the number inside the box to the power of 6.
4 boxes come from the denominator of 6/4 -
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Re: FractionsI also can't understand what he is saying. But i also don't see any point for explaining things in this way, a GCSE student shouldn't have any problem doing these in the way it is done in this thread.(Original post by steve2005)
This seems very odd. Show your method and perhaps we can make sense of it.
