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Add. Maths Binomial theorem....

shezi1995

shezi1995

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Please some one help me with this question:
Find the term independent of x in the expansion of (1+x+1/x^3)^7.
The expression is in the picture attachment:
 

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OakMoon!

OakMoon!

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Take 1+x as the first expression in the binomial formula, and 1/x^3 as the second expression. For example the second term will be: 7C1(1+x)^6(1/x^3). To evaluate (1+x)^6, apply the formula once again. If you have further problem, inform me. I'll provide you with the complete solution.

Hope this helped. :)
 
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