need help please!!!!!

(fraction)

_____1____
9x^-2 y^-1

I'm not exactly sure what you want to do but i'm assuming you want your exponents positive? just put the varibles with the negative exponents in the numerator. whenever you have a negative exponent that you want to make positive, just change it to the other side of the fraction it was orginally on. example:

1/x^(-2) = x^2
or
y^(-4) = 1/y^(-4)

the nine will stay where it is.

To simplify the given fraction:

```
1
_____
9x^-2 y^-1
```

First, let's address the negative exponents. We can move any negative exponent to the opposite side of the fraction and change its sign to make it positive.

```
1
_____
9 * (1/x^2) * (1/y)
```

Now, let's multiply the terms together.

```
1
_____
9 * (1/x^2) * (1/y) = (1 / (9x^2y))
```

Therefore, the simplified form of the fraction

```
1
___________
9x^-2 y^-1
```

is

```
1
_____
9x^2y
```