(Xp² - 4) (Xp² - 2) simplify using identity
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Answer:
(3a−21)(3a−21)=(3a−21)2
using identity (a−b)2=a2−2ab+b2
(3a−21)2=(3a)2−2×3a×21+(21)2
(3a−21)2=9a2−3a+41
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