Posted by **jazmin** on Thursday, October 7, 2010 at 10:03am.

find the lcd of this rational algebraic expression 3x+2,2x/x^2-4,x+1/x^2+5x+6 please answer it immidiately i need the answer as soon as possible ..please?

- math -
**drwls**, Thursday, October 7, 2010 at 11:17am
You have listed three "rational algebraic expressions", not one.

Note that

(x+1)/(x^2+5x+6) = 1/(x+5)

and

2x/(x^2-4) = 2x/[(x+2)(x-2)]

If you really want a least common denominator, it would be

[x+2)(x-2)(x+5)

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