SOLUTION: please help me find the LCD for the fractions: (once again not sure if I'm in the right toppic, but it's the closest thing i can find ) 5/a-5, 6/a+5 (i got -5(a) * 5(a) =- 25

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: please help me find the LCD for the fractions: (once again not sure if I'm in the right toppic, but it's the closest thing i can find ) 5/a-5, 6/a+5 (i got -5(a) * 5(a) =- 25       Log On


   

Question 536804: please help me find the LCD for the fractions: (once again not sure if I'm in the right toppic, but it's the closest thing i can find )
5/a-5, 6/a+5
(i got -5(a) * 5(a) =- 25 so -25a was my final answer which was crossed out and my teacher asked again for the LCD... HELP!)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
The denominators are a-5 and a+5


Since they have nothing in common (except the factor of 1), this means that the LCM of a-5 and a+5 is %28a-5%29%28a%2B5%29


So the LCD is %28a-5%29%28a%2B5%29


Optionally, you can FOIL that out, but I don't think it's necessary.


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