# Thread: Division of Variables Question

1. ## Division of Variables Question

Hi,

It's been a long time since algebra so I just want to make sure I'm not making a stupid mistake on my homework. This is true, right?

sqrt(P*t)/sqrt(P) = sqrt(t)

Again, it may be simple, but thanks!

2. ## Re: Division of Variables Question

Originally Posted by Coop
Hi,

It's been a long time since algebra so I just want to make sure I'm not making a stupid mistake on my homework. This is true, right?
sqrt(P*t)/sqrt(P) = sqrt(t)
If $\displaystyle p>0$ then it is true/

3. ## Re: Division of Variables Question

Okay thanks , and that's because you can't take the square root of a negative I assume?

4. ## Re: Division of Variables Question

Hello, Coop!

This is true, right? . $\displaystyle \frac{\sqrt{P\!\cdot\!t}}{\sqrt{P}} \,=\, \sqrt{t}$

Yes, you are right!
Here are two ways . . .

$\displaystyle \frac{\sqrt{P\!\cdot\!t}}{\sqrt{P}} \:=\:\frac{{\color{red}\rlap{///}}\sqrt{P}\!\cdot\!\sqrt{t}}{{\color{red}\rlap{///}}\sqrt{P}} \:=\:\sqrt{t}$

$\displaystyle \frac{\sqrt{P\!\cdot\!t}}{\sqrt{P}} \:=\:\sqrt{\frac{{\color{red}\rlap{\,/}}P\!\cdot\!t}{{\color{red}\rlap{\,/}}P}} \:=\:\sqrt{t}$

5. ## Re: Division of Variables Question

Thanks By the way, could you tell me how you input things like division and square root signs when you are on the forums?

6. ## Re: Division of Variables Question

Originally Posted by Coop
tell me how you input things like division and square root signs when you are on the forums?
It called LaTeX code

$$\frac{\sqrt{P\cdot t}}{\sqrt{P}}$$ gives $\displaystyle \frac{\sqrt{P\cdot t}}{\sqrt{P}}$.

Click on the “go advanced” tab. On the toolbar you will see $\displaystyle \boxed{\Sigma}$ clicking on that give the LaTeX wraps, . The code goes between them.

7. ## Re: Division of Variables Question

Ah thanks I'm not a coder by any means :/