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August 25th, 2008, 01:35 PM   #1
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question on homework. i need help.

i need to translate the following question into a mathematical expression. can someone help?

the opposite of 3 squared.
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August 25th, 2008, 07:30 PM   #2
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Re: question on homework. i need help.

Opposite of three squared would be ?x


That being the root sign with a three over the little notch on the left.
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August 26th, 2008, 05:29 AM   #3
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Re: question on homework. i need help.

I'm not entirely sure what you mean - 3 squared is equal to 9, but the word 'opposite' doesn't have a well-defined meaning when applied to pure numbers. It could be -9, 1/9, even something like depending on the context. If you can give a little more info on what the problem is, it might become clearer.
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August 26th, 2008, 12:59 PM   #4
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Re: question on homework. i need help.

Quote:
Originally Posted by mattpi
I'm not entirely sure what you mean - 3 squared is equal to 9, but the word 'opposite' doesn't have a well-defined meaning when applied to pure numbers.
Not disagreeing, but I think she means "opposite operation". As you suggest, it's not clear. So it might have been a search for the [positive, or "principal"] square root.
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August 26th, 2008, 01:00 PM   #5
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Re: question on homework. i need help.

Quote:
Originally Posted by [Ampharos
]Opposite of three squared would be ?x
Why [color=#FF0000]cube[/color] root?
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August 27th, 2008, 10:45 AM   #6
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Re: question on homework. i need help.

"Opposite" is often used for the additive inverse; if that's the case, the opposite of x is -x. The problem is still unclear even if that;'s the correct interpretation of opposite, though: is it (the opposite of 3) squared, or the opposite of (3 squared)?
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August 27th, 2008, 05:16 PM   #7
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Re: question on homework. i need help.

Quote:
Originally Posted by Dave
Quote:
Originally Posted by [Ampharos
]Opposite of three squared would be ?x
Why [color=#FF0000]cube[/color] root?
Whoops.
My bad.
I got mixed up when three got involved. xP

That'd be Just regular root three then.
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