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Posted by **Michael** on Sunday, December 2, 2012 at 7:52pm.

- Math MRS SUE PLEASE HELP!! -
**Ms. Sue**, Sunday, December 2, 2012 at 7:56pmSorry. I don't know.

- Math MRS SUE PLEASE HELP!! -
**Reiny**, Sunday, December 2, 2012 at 9:30pm2x/((x-4)(x+4)) + 7/(x-4)

so the LCD is (x-4)(x+4)

= 2x/((x+4)(x-4) + 7(x+4)/((x+4)(x-4))

= ( 2x + 7x + 28)/((x+4)(x-4))

= (9x+28)/(x^2 - 16)