# Math Help - exponents problem

1. ## exponents problem

i have to find two expressions that are mathematically equal to e^-2x

how do i go about this? any help would be appreciated!

2. Originally Posted by clockingly
i have to find two expressions that are mathematically equal to e^-2x

how do i go about this? any help would be appreciated!
Note that,
$e^{-x}=\frac{1}{e^x}$
Thus,
$e^{-x}$
Und,
$\frac{1}{e^x}$
Are equal.

3. Hello, clockingly!

i have to find two expressions that are mathematically equal to $e^{-2x}$

Are there any suggestions of what is expected?

If not, both $e^{-2x} + 0$ and $e^{-2x} \times 1$ certainly work.

4. e^-2x

There are many ways of writing it.

1/(e^2x)

(1/e^x)^2

(e^-x)^2

(e^-x)/(e^x)