SOLUTION: Determine the value(s) of the variable for which a) the expression equals zero b) the expression is undefined. 15 -5d / d^2 + 25

Algebra ->  Expressions-with-variables -> SOLUTION: Determine the value(s) of the variable for which a) the expression equals zero b) the expression is undefined. 15 -5d / d^2 + 25       Log On


   

Question 1134233: Determine the value(s) of the variable for which a) the expression equals zero b) the expression is undefined.
15 -5d / d^2 + 25
Found 3 solutions by Glaviolette, Alan3354, josgarithmetic:
Answer by Glaviolette(140) About Me  (Show Source):
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Glaviolette is obviously from Australia or New Zealand.
All her photos are inverted.

Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
-------------------------------------
Determine the value(s) of the variable for which a) the expression equals zero b) the expression is undefined.
15 -5d / d^2 + 25
---------------------------------------

Assuming your expression is (15-5d)/(d^2-25),

It is defined for all real numbers d, and the only value making the expression 0 is for d=3. Denominator will never be 0 here.