Question

if n=2 find (n-1/n) please help me​

Answer 1

Answer:

$\frac{n - 1}{n}$

$where \: \: n = 2$

$\frac{2 - 1}{2}$

$\frac{1}{2}$

hope it will help you

pls mark me as a brainlest

Answer 2

Answer:

n= 3

Step-by-step explanation:

We have,

(n+2)!=60(n−1)

As we know n!=(n−1) n!

Therefore,

(n+2)(n+1)n×(n−1)!=60(n−1)!

(n+2)(n+1)n=60

(n2+2n+n+2)n=60

(n3+3n2+2n−60)=0

⇒n3+3n2+2n−60=0

Factoring the left hand side, this equation resolves to

(n−3)(n2+6n+20)=0(n−3)(n2+6n+20)=0

Since it can be shown that(n2+6n+20)=0 has (n2+6n+20)=0 no real solution, 

n−3=0

n=3