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    The 3 and 6 look ripe for taking a constant factor out. What is it?
    What's the highest power of x and y that could be removed? (without creating negative powers in either term)
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    Bossman I have no clue whats going on, this is the answer I got.

    Q: Factorise fully 3xy^2 - 6x^3y

    A: 3xy (xy - 3x^2)
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    (Original post by Abu Bakr al Bag)
    Bossman I have no clue whats going on, this is the answer I got.

    Q: Factorise fully 3xy^2 - 6x^3y

    A: 3xy (xy - 3x^2)
    Bolded your mistake. Look carefully...
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    (Original post by NiamhM1801)
    Bolded your mistake. Look carefully...
    Oh christ im a *******
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    (Original post by Abu Bakr al Bag)
    Oh christ im a *******
    Happens to the best of us
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    (Original post by NiamhM1801)
    Bolded your mistake. Look carefully...
    Cheers bossman, needed another set of eyes to spot something as stupid as that.
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    The way I learned this was to say to myself "what's the largest part that can be taken from all parts of the expression".

    Dunno if that helps.... straight away you can see 3 is the largest factor of 3 and 6.

    Then xy is the largest that can be taken from xy^2 and x^3y

    So 3xy outside the bracket leaving the rest inside... (y-2x^2)

    I always multiply it out again to check it to make sure you get back to the original expression.
 
 
 
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