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March 26, 2017

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Subtract. Simplify by removing a factor of 1 when possible.


(10bf)/(b^2-f^2)-(b-f)/b+f)


Thank you for your help

  • Algebra 2 - ,

    the actual subtraction part is easy: it's two factions being subtracted, which can only be done if they have the SAME denominator. So... the common denominator for the new fraction will be

    (b^2 - f^2)(b + f)

    the numerator is

    (10bf)*(b + f) - (b - f)*(b^2 - f^2)

    the new fraction is

    (10bf)*(b + f) - (b - f)*(b^2 - f^2)
    -----------------------------------
    (b^2 - f^2)(b + f)

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