( x - 5 ) 3 = 23
suy ra : x - 5 = 2
x = 2 + 5
Vậy : x = 7
(x-5)3=8
(x-5)3=23
=>x-5=2
x=2+5
x=7
vậy x=7
( x - 5 )3 = 8
=> ( x - 5 )3 = 23
x - 5 = 2
x = 2 + 5
x = 7
(x - 5)3 = 8
<=> (x - 5)3 = 23
<=> x - 5 = 2
<=> x = 7
\(\left(x-5\right)^3=8\)
\(\left(x-5\right)^3=2^3\)
\(\Rightarrow x-5=2\)
\(\Rightarrow x=2+5\)
\(\Rightarrow x=7\)
Vậy x = 7