Can you prove it? ? it's hard, i tried but couldn't solve this.

I'll abbreviate and , so the identity to prove is

On the left side, we can simplify a bit:

Then

So the establish the original equality, we need to show that

Combine the fractions:

We can rewrite the denominator as

then using the fact that , we get

so that we have

as desired.

idk

step-by-step explanation:

it is a reproduction.

step-by-step explanation: