i've now got the question: factorise: but i don't know what to do when its only letters involved without the help of any numbers, could someone show me how to do it this way?

thanks

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- September 13th 2009, 09:46 AMmarkfactorising
i've now got the question: factorise: but i don't know what to do when its only letters involved without the help of any numbers, could someone show me how to do it this way?

thanks - September 13th 2009, 09:49 AMe^(i*pi)
- September 13th 2009, 10:06 AMmark
i tried that formula out but it didn't seem to work. say i put p = 4 and q = 2 the equation would be so then it would be which then leads to then 32 - 16 + 8 = 24 ,so obviously not 56. whats gone wrong here?

- September 13th 2009, 10:08 AMe^(i*pi)
- September 13th 2009, 10:10 AMmark
ah i see thanks, silly mistake there