The HCF of the polynomials \( 5\left(x^{2}-16\right)(x+8) \) and \( 10\left(x^{2}-64\right)(x+4)...

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The HCF of the polynomials \( 5\left(x^{2}-16\right)(x+8) \) and \( 10\left(x^{2}-64\right)(x+4) \) is
(a) \( x^{2}+12 x+32 \)
(b) \( 5\left(x^{2}+12 x+32\right) \)
(c) \( x^{2}-12 x+32 \)
(d) \( 5\left(x^{2}-12 x+32\right) \)
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