Please helppp ill give you points

Which expression shows the sum of the polynomials with like terms grouped together

We just started the introduction into circles and i have no idea how to do this.

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap