9th grade math

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  • 9th grade math -

    Assuming that the whole left side is over the whole right side, we have

    = [x^3(x^2-1) + (x^2-1) - (x^3-1)(x+1)^2] / (x^2-1)^2

    = [(x+1)^2(x-1)(x^2-x+1) - (x+1)^2(x-1)(x^2+x+1)]/(x+1)^2(x-1)^2

    = -2x/(x-1)

  • 9th grade math -


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