Factorise : x⁴ - 3x²+2
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Answer:=(x−1)(x+1)(x2−2)
Step-by-step explanation:x^4–3x2+2
=x^4−x^3+x^3−x^2–2x2+2
=x^3(x−1)+x^2(x−1)−2(x^2–1)
=x3(x−1)+x^2(x−1)−2(x+1)(x−1)
=(x−1){x^3+x^2–2(x+1)}
=(x−1)(x^3+x^2–2x−2)
=(x−1){x^2(x+1)−2(x+1)}
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