Question

Which of the following is NOT equivalent to the rational expression?

(Down Below)

Answer 1

\[\frac{3}{9-x}\]
\[A: -\frac{ 3 }{ x-9 }\]
\[B: -\frac{ 3 }{ 9-x }\]
\[C: \frac{ -3 }{ x-9 }\]

Answer 2

Choice A is going to be equivalent. It takes the original and multiplies the bottom by negative one. -(9-x)=(x-9). Then they multiplied the top by negative 1 as well by putting the negative in front.

Choice B just multiplies the top by negative one, so it's not equivalent. You have to multiply BOTH by negative 1 in order for it to stay the same.

What do you think about Choice C?