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The L.C.M. of (x + 2)2(x - 2) and (x2 - 4x - 12) is -
- A(x + 2) (x - 2)
- B(x + 2) (x - 2) (x - 6)
- C(x + 2) (x - 2)2
- D(x + 2)2(x - 2)(x - 6)
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CCommunity
x2 - 4x - 12 = x2 - 6x + 2x - 12
= x(x - 6) + 2(x - 6)
= (x + 2)(x - 6)
And another is (x + 2)2(x - 2)
So LCM = (x + 2)2(x - 2)(x - 6)
= x(x - 6) + 2(x - 6)
= (x + 2)(x - 6)
And another is (x + 2)2(x - 2)
So LCM = (x + 2)2(x - 2)(x - 6)