Question please answer

D

Step-by-step explanation:

So, recall the four basic i exponents:

The strategy here is to write the expression in terms of i to the fourth times another i.

For instance, 39 is the same as 36 plus 3. In other words:

Now, i^36 is the same as (i^4)^9. So:

And as we already know, i to the fourth is 1. So:

Simplify:

Again, i to the third is -i. So:

Our answer is D.

And we're done!

do you mean add both of the equations together

because if you do the answer is 10x-5

step-by-step explanation:

there is no question content here, but you for the free points! : d