# Math Help - I need help to understand this algebraic fraction problem

1. ## I need help to understand this algebraic fraction problem

Hello the problem is stated on the uploaded paper

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

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

note that $4x^2 + (x^4-2x^2+1) = x^4+2x^2+1$

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

4. 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