Question

Factorise x4 + 4/x4​

Answer 1

Step-by-step explanation:

$x {}^{4} + \frac{4}{x {}^{4} } \\ = ({x}^{2}) {}^{2} + ( \frac{2}{ {x}^{2} } ) {}^{2}$

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Answer 2

Answer:

(x^2+2/x^2-2)(x^2+2\x^2+2)