Question

prove by using mathematical induction method that 7^2n+2^3n-3*3^n-1 is divisible by 25 for any natural number n

Answer 1

This Question is based on Induction , in induction first we check the equation by putting any value according to given condition then
step :1 we assume p(k) satisfies the condition
step :2 we proove it for p(k+1)
done :

Check photo for answer