If the HCF of the polynomials (x^2+8 x+16)(x^2. -9) and (x^2+7 x+12) is x^2+7 x+12, then their LC...

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If the HCF of the polynomials (x^2+8 x+16)(x^2. -9) and (x^2+7 x+12) is x^2+7 x+12, then their LCM is
(a) (x+4)(x^2-9)
(b) (x+4)^2(x^2-9)
(c) (x^2-4)(x^2+9)
(d) (x+4)^2(x+3)

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