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[enigma_1]

<a href="http://www.codecogs.com/eqnedit.php?latex=&space;(x&plus;1/x)^6" target="_blank"><img src="http://latex.codecogs.com/gif.latex?Expand&space;(x&plus;1/x)^6" title="Expand (x+1/x)^6" /></a>

If U = <a href="http://www.codecogs.com/eqnedit.php?latex=(x&plus;1/x)" target="_blank"><img src="http://latex.codecogs.com/gif.latex?(x&plus;1/x)" title="(x+1/x)" /></a>

Express =(x^6&plus;1/x^6)" target="_blank"><img src="http://latex.codecogs.com/gif.latex?(x^6&plus;1/x^6)" title="(x^6+1/x^6)" /></a> in the form U^6 + AU^4 + BU^2 +C

State the values of A, B and C

 

[enigma_1]

soz never used this latex before

 

[rumbleroar]

hm could you do it two ways where you treat it as ((x+1/x)^2)^3 or common denominate, and you get ((x^2+1)^6/x^6), expand the top using pascals triangle?

then group it later to get the other u stuff?