How to simplify (x^3 + 3x + 1)^2  TOPIC_SOLVED

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How to simplify (x^3 + 3x + 1)^2

Postby mitnord on Thu Mar 26, 2009 1:35 am

Please, help me simplify this expression:

(x^3 + 3x + 1)^2

Thank you.
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  TOPIC_SOLVED

Postby stapel_eliz on Thu Mar 26, 2009 3:42 pm

mitnord wrote:(x^3 + 3x + 1)^2

Try doing the expansion vertically:

vertical multiplication:
x^3 + 3x + 1
x^3 + 3x + 1
--------------------------------
x^3 + 3x + 1
3x^4 + 9x^2 + 3x
x^6 + 3x^4 + x^3
--------------------------------

Then add down to obtain the product. :D
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