Question

(2.n+1)mu 3=125

mk can gap giup mk nhe !

Answer 1

(2n + 1)³ = 125

(2n + 1)³ = 5³

2n + 1 = 5

2n = 4

n = 2

Answer 2

(2.n+1)³=125

(2.n+1)³=5³

(2.n+1) =5

 2.n      =5-1

 2.n      =4

          n=4:2

           n=2

Answer 3

    (2.n+1)³=125

=>(2.n+1)³=5³

=>2.n+1=5

=>2.n=5-1

=>2.n=4

=>n=4:2

=>n=2

k mik nha