Question 585232
You CANNOT divide by zero.


So the denominator 9w+8 CANNOT be zero. If it were, then 


9w+8 = 0


solve for w to get


9w+8 = 0


9w = -8


w = -8/9



So the value w = -8/9 makes the denominator zero, which is what we do NOT want (since we do NOT want to divide by zero).



So the value {{{-8/9}}} makes the rational expression undefined.

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