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x2 + 8x - 9 factors to (x - 1)(x + 9)

x2 - 1 factors to (x - 1)(x + 1)

The LCM will be (x - 1)(x + 1)(x + 9) or x3 + 9x2 - x - 9

The GCF is (x - 1)

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12y ago

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