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Expand (x + y/sqrt[n] + z/n)^2

  1. Mar 8, 2010 #1

    I have come across this part of a question which has puzzled me.

    I assume it means Taylors, but could someone help me understand this?
  2. jcsd
  3. Mar 8, 2010 #2


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    Re: Expansion

    Not Taylor's expansion, they just mean to multiply it out:

    (x + y/sqrt[n] + z/n) * (x + y/sqrt[n] + z/n) = x2 + . . .​
  4. Mar 8, 2010 #3
    Re: Expansion

    Ah, typical of me. I always look for the hardest way of doing things.

    Thank you!
  5. Mar 8, 2010 #4


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    Re: Expansion

    Not a taylor series - just square the whole thing.

    \left(x + \frac y {\sqrt n} + \frac z n\right)^2 = \left(x + \frac y {\sqrt n} + \frac z n\right) \cdot \left(x + \frac y {\sqrt n} + \frac z n\right)
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