Question

tim x biet : (2x-1)^3=27

Answer 1

(2x-1)³=27

=>(2x-1)³=3³

=>2x-1=3

=>2x=3+1

=>2x=4

=>x=4:2

=>x=2

Answer 2

(2x-1)^3=27

(2x-1)^3=3^3

2x-1=3

2x=3+1

2x=4

x=4/2

x=2