Posted by **Liz** on Tuesday, November 25, 2008 at 9:47pm.

find each product and simplify if possible:

9z+5 X 5z

---- -----

15 81z(exponent 2) -25

- Algebra II -
**Reiny**, Tuesday, November 25, 2008 at 10:23pm
try typing it like this:

(9z+5)/15 * 5z/(81z^2 - 25)

= (9z+5)/15 * 5z/[9z+5)(9z-5)]

= 1/3 * z/(9z-5) I canceled (9z+5) and a 5

= z/[3(9z-5), z not equal to zero or 5/9

check my steps, sometimes I make error when I am solving and typing at the same time.

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