Posted by pj on .
Could I get some help Please!!!!!!!!!
(1) Find the LCD
3/3v^23v7/3v3
(2) Find the LCM
14z^7 and 98z^8
(3) Find LCM
y^3+6y^2+9y,y^26y

Algebra 
Reiny,
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^23v7)(3v3)
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^26y = y(y6)
so LCD = y(y6)(y+3^2