SOLUTION: find the LCD for 9/a^2+8a+16 and 6a/5a+20 a. 5(a+4)^2 b. (a+4)(5a+20) c. 5(a+4)^3 d. (a^2+8a+16)(5a+20) my final is tomorrow and i still dont understand this LCD concept.

Question 91937: find the LCD for 9/a^2+8a+16 and 6a/5a+20
a. 5(a+4)^2
b. (a+4)(5a+20)
c. 5(a+4)^3
d. (a^2+8a+16)(5a+20)
my final is tomorrow and i still dont understand this LCD concept.
Answer by funmath(2933) (Show Source): You can put this solution on YOUR website!
find the LCD for 9/a^2+8a+16 and 6a/5a+20
a. 5(a+4)^2
b. (a+4)(5a+20)
c. 5(a+4)^3
d. (a^2+8a+16)(5a+20)
First, factor both denominators:

Therefore the LCD has 2 factors of (a+4) and 1 factor of 5.

Happy Calculating!!!!
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