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September 19, 2014

September 19, 2014

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

(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 9:46pmfactor 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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