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    Hi, can anyone help me with part (b) of question 4? I don't have a clue where to start with it.
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    I've got the answer to part (a) if that's needed for the question. It's 1+(3x/10)+(3x^2/50)+(x^3/100).
    Thanks in advance
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    (Original post by Hannie Rose)
    Hi, can anyone help me with part (b) of question 4? I don't have a clue where to start with it.
    Name:  image.jpg
Views: 96
Size:  506.3 KB
    I've got the answer to part (a) if that's needed for the question. It's 1+(3x/10)+(3x^2/50)+(x^3/100).
    Thanks in advance
    not hard
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    If you're struggling write out the first 3,4 or 5 terms. Then look for a general pattern in the coefficients of the terms. Also don't write out the coefficients in any simplified form just write it out as products.
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    Expand using n instead of 3, for the first 3 or 4 terms.
    Then, take out a factor of 1/10^n.
    You should end up with the other part to simplify into the form requested.
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    Ive tried this still cant see whats going on ive done it where the powers -n too
 
 
 
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