Question

Prove that the value of the expression 7^8–7^7 +7^6 is divisible by 43.

Answer 1

Explanation:

1. if to evaluate the given experssion, then

7⁶(7²-7+1)=7⁶*43.

2. if to divide this evaluated expression by 43, then

7⁶*43/43=7⁶.