Question

4. Factorize:x4+1.(Hint:Try completing the square.)​

Answer 1

Answer:

x^4+1

= (x^2)^2-1^2

= (x^2+1)(x^2-1)

= (x^2+1)(x^2-1^2)

= (x^2+1)(x+1)(x-1)

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Answer 2

Answer:

x^4+1

= (x^2)^2-1^2

= (x^2+1)(x^2-1)

= (x^2+1)(x^2-1^2)

= (x^2+1)(x+1)(x-1)