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prove that

I revise : and prove that

Hello wizard654zzz Quote: Originally Posted by wizard654zzz I revise : and prove that Factorise the LHS using difference of two squares: Grandad

Quote: Originally Posted by wizard654zzz I revise : and prove that hi all another methode http://i99.servimg.com/u/f99/12/89/99/77/almonk16.gif