Question 87797
Find the LCD for the given rational expressions, and convert each rational expression into an equalivalent rational expression with the LCD as the denominator. 
3/4b^2-9,2b/2b+3,-5/2b^2-3b
---------------------------
Factor each denominator:
4b^2-9 = (2b-3)(2b+3)
2b+3
2b^2-3b = b(2b-3)
----------------------
Form the LCD:
LCD = b(2b+3)(2b-3)
---------------------
Convert each fraction:
3/(4b^2-9) = [3*b]/LCD
2b/2b+3 = [2b^2(2x-3)]/LCD
-5/2b^2-3b = -5(b+3)/LCD
=========================
Cheers,
Stan H.