Math, asked by mayank10kandari, 5 months ago

find value of n in 2n+¹ - 2n-¹ = 48​

Answers

Answered by branilyqueen10
3

1) find value of n in 2n+¹ - 2n-¹ = 48

Step-by-step explanation:

(n+1)!=12(n−1)!

(n(n+1)−12)(n−1)!=0                                                [n!=n(n−1)!]

As (n−1)! cannot be zero

=>(n(n+1)−12)=0

         n2+n−12=0

 

         n2+4n−3n−12=0

 

         (n+4)(n−3)=0

 

Either n=−4 or n=3

For  n=−4,(n−1)! is not defined

=> Value of n is 3    

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