Math Help - Negative number in the denominator

1. Negative number in the denominator

Is that right?

$\frac{3-x}{-10} = -\frac{3-x}{10}$

2. Yes.
This is also correct.
$\dfrac{3-x}{-10}=\dfrac{x-3}{10}$.

Do you understand why?

3. Yes. Thanks

4. Another question.

Is this right?
$(\dfrac{x-1}{2})^{2} = \dfrac{x-1}{2} * \dfrac{x-1}{2} = \dfrac{x^{2}-2x+1}{4}$

5. Originally Posted by klik11
Another question.

Is this right?
$(\dfrac{x-1}{2})^{2} = \dfrac{x-1}{2} * \dfrac{x-1}{2} = \dfrac{x^{2}-2x+1}{4}$
Yes that is correct.