Simplify this rational expression. Assume the denominator never equals zero. $\frac { 3 - 3 \cdot y } { y ^ { 2 } - 1 }$
A) $- \frac { 3 } { y + 1 }$
B) $\frac { 1 } { y - 1 }$
C) $\frac { 3 } { y + 1 }$
D) $\frac { 3 } { y ^ { 2 } - 1 }$
E)Does not simplify further.

Question

Quizplus · Accepted Answer

The numerator can be factored as $3(1 - y)$, and the denominator as $(y + 1)(y - 1)$ using the difference of squares formula. Simplifying, we get $-\frac{3}{y + 1}$ because $1 - y$ is $-(y - 1)$.

Simplify This Rational Expression 3−3⋅yy2−1\frac { 3 - 3 \cdot y } { y ^ { 2 } - 1 }y2−13−3⋅y​

Simplify This Rational Expression $\frac { 3 - 3 \cdot y } { y ^ { 2 } - 1 }$