Question

find value of n in 9n+1 - 9n =72​

Answer 1

Answer:

9n+1-9n=72

Explanation:

1. 9n+9n = 72-1
2. 18n=71
3. n=71/18
4. n= 3.94

Answer 2

Answer:

4

step by step Explanation :

= 9^n+1-9^n =72

= 9^n+1-9^n=(2)^3*(3)^2

= hence ,

= n+1-n=3+2

= n-n = 3+2-1

= 3+2-1

= 3+1

= 4

so, the value of "n" is 4