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posted by Clark on Tuesday, October 18, 2011 at 4:08am.

Lowest common denominator of the following denominators: (5x^3)+25x^2 and 3x+15

5x^3 + 25x^2 = 5x^2(x+5) 3x+15 = 3(x+5) so the LCD = 3(5x^2)(x+5) or 15x^2(x+5)

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