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**bronxsystem****Member**- Registered: 2013-06-22
- Posts: 63

hey all i dont know what im missing here ):

i thought we first square everything

then subtract 2

then divide by 4

but i get wrong answer. what did i do wrong ><

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 84,730

Hi;

The mistake is in your second step

It should be

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

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**bronxsystem****Member**- Registered: 2013-06-22
- Posts: 63

thank you makes sense i was completely stuck

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 84,730

Hi;

Okay, if you need help post back.

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

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