Find the domain of the expression.
-$$\frac { y } { y ^ { 2 } - 25 }$$
A) $\{ y \mid y \neq 625$ and $y \neq - 625 \}$
B) $\{ y \mid y \neq 0 \}$
C) $\{ y \mid y \neq 25$ and $y \neq - 25 \}$
D) $\{ y \mid y \neq 5$ and $y \neq - 5 \}$

Question

Quizplus · Accepted Answer

The denominator $y^2 - 25$ factors into $(y - 5)(y + 5)$, so the expression is undefined when $y = 5$ or $y = -5$. Thus, the domain excludes these values.

Find the Domain of the Expression yy2−25\frac { y } { y ^ { 2 } - 25 }y2−25y​

Find the Domain of the Expression $\frac { y } { y ^ { 2 } - 25 }$