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