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    Hi,

    I've been practising some textbook questions on binomial expansion but I'm a bit stuck with this one. Please could someone explain how to do it? Thanks
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    (Original post by VioletPhillippo)
    Hi,

    I've been practising some textbook questions on binomial expansion but I'm a bit stuck with this one. Please could someone explain how to do it? Thanks
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    (Original post by VioletPhillippo)
    Sorry I forgot to attach it
    the picture is like well blurry ?
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    (Original post by VioletPhillippo)
    Sorry I didn't realise that it was so blurry, I've taken another picture
    You can either factor out a factor out a factor of 2^4 to make it equivalent to \displaystyle 2^4\left(1 + \frac{x}{2}\right)^4 and then use the formula for expanding a(1+bx)^c binomials.

    Or:

    You can use the binomial theorem straight away: 2^4 + {4\choose 1}2^3x^1 + {4\choose 2}2^2 x^2 + \cdots
 
 
 
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