Question

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x⁴ + x² + 1
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Answer 1

Answer:

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

(x^2) ^9-1

x^18 -1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

x4 + x2 + 1 = (x4 + 2x2 + 1) – x2 = [(x2)2 + 2x2 + 1] – x2 = [x2 + 1]2 – x2 It is in the form of (a2 – b2) = (a + b)(a – b) Hence [x2 + 1]2 – x2 = [x2 + 1 + x] [x2 + 1 – x]