# Simplifying numerator

I'm writing a script to create quotient rule exercises, but I cannot coerce the fraction to simplify as desired. In particular, I'd like `latex(sol)`

to look like the following:

```
\frac{2x+4}{(x^2+1)^2}
```

But evaluating

```
(2*x+4)/(x^2+1)^2
```

always seems to factor the numerator to get

```
2*(x + 2)/(x^2 + 1)^2
```

and `simplify_full()`

seems to only expand the denominator, not the numerator:

```
2*(x + 2)/(x^4 + 2*x^2 + 1)
```

For clarity, I think the general problem is this (perhaps?) surprising phenomenon: `latex(f/g)`

doesn't seem to respect whether the expression `f`

is factored or not.