Need this quick! this is worth 15 points! also, will mark brainliest! thx so much : )

provide the divisibility for:

7^6+7^5-7^4 by 11

5^5-5^4+5^3 by 7

again!

11 does divide (7^6+7^5-7^4) into 5

7 does divide (5^5-5^4+5^3) into 3

Step-by-step explanation:

I don't know what method your teacher wants you to use but am assuming no calculators are allowed. To solve this I would first do some thinking:

(I write 11 divides x as 11|x):

We can for sure tell that 11 does not divide the factor 7^4 because 7 is prime and so tough luck. but the remaining factor is more amenable

ad so, clearly, 11 divides the second factor into 5.

As for the second expression, similar thing:

Again, 5 is prime, so 7 won't ever, never divide 5^3. Second term:

means 7 divides the expression to 3!

the probability is 0