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Help! Factorise an equation with fraction index?

  1. Oct 12, 2004 #1
    Hello, all,

    I am here is to ask how can I factorise an equation with fraction indeces?? (Help~)

    The question I have got is x^(3/2) + a^(3/2), and the suggested method is using the factor theorem... but I just don't understand how could that works...

    However, I would be very grateful if somebody could give me a hint~

    Thanks
     
  2. jcsd
  3. Oct 12, 2004 #2
    [tex]x^3+y^3=(x+y)(x^2-xy+y^2)[/tex]
     
  4. Oct 12, 2004 #3
    Oh, gosh, thanks a lot mate, I haven't thought of this way before...
     
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