Posted by **pj** on Wednesday, December 17, 2008 at 9:24pm.

Could I get some help Please!!!!!!!!!

(1) Find the LCD

3/3v^2-3v-7/3v-3

(2) Find the LCM

14z^7 and 98z^8

(3) Find LCM

y^3+6y^2+9y,y^2-6y

- Algebra -
**Reiny**, Wednesday, December 17, 2008 at 9:46pm
factor each of your denominators.

the LCD should contain all the factors that are in any denominator..

for (1)

since your first denominator does not factor, your LCD is (3v^2-3v-7)(3v-3)

are you sure you typed it correctly, I would have expected the first part to factor

for (2)

14z^7 = 14z^7

98z^8 = (14z^7)(7z)

so 98z^8 is the LCD

for (3)

y^3+6y^2+9y = y(y+3)^2

y^2-6y = y(y-6)

so LCD = y(y-6)(y+3^2

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