algebra

posted by Josie

3 - __2X-2______
X^2-1

Write the expression as a fraction in simplest form.
3 minus 2x-2 over xsquared minus 1

Can anyone help?

  1. Henry

    3 - (2x+2)/(x^2-1).
    LCD = x^2-1.
    (3(x^2-1) -(2x+2))/(x^2-1)
    (3x^2-3-2x-2)/(x^2-1)
    (3x^2-2x-5)/(x^2-1)
    Factor the numerator: and denominator:
    ((x+1)(3x-5))/(x+1)(x-1)=(3x-5)/(x-1)

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