Question

(4 ^ (x + 2) - 4 ^ (x + 1))/(8 * 4 ^ n - 4 ^ n)​

Answer 1

Answer:

4!(n−4)!

n!

2!(n−2)!

n!

=

1

2

⇒

2!(n−2)!

4!(n−4)!

=

1

2

⇒

(n−2)(n−3)

12

=2

⇒(n−2)(n−3)=6

⇒n

2

−5n+6=6

⇒n

2

−5n=0

⇒n(n−5)=0

⇒n=0 or n=5

(n−2)! won't be defined