Amarjeet K. answered • 02/07/14

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Professional Engineer for Math and Science Turoring

((x-5)/(x2-25)) = (x-5)/(x^2 - 5^2) = (x-5)/ (x-5)(x+5) = 1/(x+5)

Now the expression becomes

1/(x+5) - 3/(x+5) = (1-3)/(x+5) = -2/(x+5)

:)

Steve S.

02/07/14