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Ingri S
Ingri S asked in Science & MathematicsMathematics · 1 decade ago

What is the LCM of x2 plus 8x-9 and x2-1?

Homework help... please. What is the LCM or LCD for X^2+8x-9 and x^2-1?

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  • Bleaksky
    Lv 6
    1 decade ago
    Favorite Answer

    X² + 8x - 9 and x² -1

    Factor them out first:

    (x + 9)(x - 1) and (x + 1)(x - 1)

    LCD = (x + 9)(x - 1)(x + 1)

  • ?
    Lv 5
    1 decade ago

    (x^2 + 8x - 9)

    (x - 1)(x + 9)

    (x^2 - 1)

    (x - 1)(x + 1)

    LCM / LCD would be (x - 1)(x + 9)(x + 1)

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