faithshingleton faithshingleton

21-06-2017
Mathematics

contestada

(3/x^2-9)+(5/x+3)

a. 8/x^2+x-6
b. 5x-12/x-3
c. -5x/(x+3)(x-3)
d.5x-12/(x+3)(x-3)

Respuesta :

21-06-2017

d.) would be the best answer here
(3/x^2-9)+(5/x+3)
(3/(x+3)(x-3))+(5/(x+3))
(3/(x+3)(x-3))+((5(x-3))/(x+3)(x-3))
(3+5(x-3))/((x+3)(x-3))
(3+5x-15)/((x+3)(x-3))
(5x-12)/((x+3)(x-3))

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