I need help to understand this algebraic fraction problem

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March 8th 2011, 12:00 PM
Riazy

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I need help to understand this algebraic fraction problem

Hello the problem is stated on the uploaded paper

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March 8th 2011, 12:08 PM
e^(i*pi)

The key is recognising that the numerator is a perfect square:

$x^4+2x^2+1 = (x^2+1)^2$

note that $4x^2 + (x^4-2x^2+1) = x^4+2x^2+1$
March 8th 2011, 12:17 PM
Riazy

Ah thanks ;) I get stuck at basic things although I am studying at uni <(-_-)>
March 8th 2011, 12:30 PM
e^(i*pi)

Quote:

Originally Posted by Riazy

Ah thanks ;) I get stuck at basic things although I am studying at uni <(-_-)>

It's often the way, one forgets the basics when working on harder maths

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