Please help i dont get 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

Find cot x if sin x cot x csc x = √2

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i