Question

(X+1) (x-1)(x2+1)

Can u do this

Answer 1

x² - 1 ( x² + 1 )

x⁴ + x² - x² -1

x⁴ -1

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Answer 2

Using identity a^2 - b^2 = (a-b)(a+b)

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