Question

Factorise :

x4 +4/x4

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Answer 1

Answer:

x^4+4/x^4+4-4

= (x^2+2/x^2)^2-4

now using formula a^2-b^2:

(x^2+2/x^2)^2+(2)^2

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

Answer 2

Answer:

Explanation:

x4+ 4/x4

take x4 as common it becomes :

x4(1+4)

x4(5)

5x to power 4