1. ## Another

2- Subtract then, simplify

_ 3___ _ _ 2___
X - 4 X2- 16

a.
LCD = (X - 4)(X + 4) then, answer is; _3X + 10
LCD

b.
LCD = X2 - 4 then, answer is; _3X + 14 LCD

c.
LCD = (X - 4)(X + 4) then, answer is; _3X + 14 LCD

d.
LCD = (X - 4)(X + 4) then, answer is; _3X - 10 LCD

2. ## Is this a multiple choice question?

It is difficult to read from where I am, but looks like a simple item.

Can you write it in plain text, i.e, (2x+7)/(x-1) or whatever?

The formatting is not working well and I don't want to guess.

3. Check out the attachment... Should be easier to read

4. Originally Posted by rdfisch
Check out the attachment... Should be easier to read
Here is a link to help with La Tex (the built in my type on this site)

http://www.mathhelpforum.com/math-he...-tutorial.html

The code for a fraction is \frac{3}{x-4}-\frac{2}{x^2-16}

To open the math tags click on the sigma $\sum$(next to the you Tube link). Where I put the above into the math tags I get...

$\frac{3}{x-4}-\frac{2}{x^2-16}$

First to find the LCD we want to factor the denominator so we get

$\frac{3}{x-4}-\frac{2}{(x-4)(x+4)}$

Now we notice that the first fraction is missing an x+4 so we build it to get a common denominator

$\frac{3}{x-4}\frac{(x+4)}{(x+4)}-\frac{2}{(x-4)(x+4)}$

Simplifying we get

$\frac{3x+12}{(x+4)(x-4)}-\frac{2}{(x-4)(x+4)}=\frac{3x+10}{(x-4)(x+4)}$

Good luck.