Search: Prove that for any natural n the value of the expression (4n 5)^2–9 is divisible by 4.
Prove that 7^7-7^6 is divisible by 6
prove that 5^7+5^6 is divisible by 6. write your answer in exponentional form.
5^7+5^6=___ * 6
Prove that for any natural n the value of the expression (4n+5)^2–9 is divisible by 4.
Prove that for any natural value of n the value of the expression:
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