Find all numbers for which the rational expression is not defined.
-$\frac { 5 y - 3 } { y ^ { 2 } - 49 }$
A) $y = 7$ and $y = - 7$
B) $y = \frac { 3 } { 5 }$
C) $y = 49$
D) $y = 7$

Question

Quizplus · Accepted Answer

A rational expression is not defined when its denominator is equal to zero. For the given expression, the denominator is $y^2 - 49$, which factors into $(y - 7)(y + 7)$. Therefore, the expression is undefined for $y = 7$ and $y = -7$.

Find All Numbers for Which the Rational Expression Is Not 5y−3y2−49\frac { 5 y - 3 } { y ^ { 2 } - 49 }y2−495y−3​

Find All Numbers for Which the Rational Expression Is Not $\frac { 5 y - 3 } { y ^ { 2 } - 49 }$