Hello, skaters!

These are not easy ones . . . Here is some help.

The left side is: .

The right side is: .

The equation becomes: .

Therefore: .

The left side is: .

The right side is: .

The equation becomes: .

Therefore: .

The first term is: .

The second term is: .

The equation becomes: . . . .ugh!

I see that is a solution.

Beyond that, you're on your own.