( 2x - 1)3 = 343
=> ( 2x - 1 )3 = 73
=> 2x - 1 = 7
=> 2x = 7 + 1
=> 2x = 8
=> x = 8 : 2
=> x = 4
\(\left(2x-1\right)^3=343\)
\(\left(2x-1\right)^3=7^3\)
\(2x-1=7\)
\(2x=7+1\)
\(2x=8\)
\(x=8:2\)
\(x=4\)
(2x-1)^3=343
=> 2x-1=7
=> 2x=8
=> x=4
Vậy x=4
(2x-1)^3=343
(2x-1)^3=7^3
2x-1=7
2x=7+1
x=8:2
x=4
( 2x - 1 ) 3 = 73
<=> 2x - 1 = 7
2x = 7 + 1
2x = 8
x = 8 : 2
x = 4
cảm ơn các bạn nnnnnnnnnnnnnnnnnhhhhhhhhhhhhhhiiiiiiiiiiiiiiiiiiiiieeeeeeeeeeeeeeeeuuuuuuuuuuuuuu
