( 2x - 5 )^5 - 64 = 960
( 2x - 5 )^5 = 1024
( 2x - 5 )^5 = 4^5 = (-4)^5
(+) Th1: 2x - 5 = 4 (+) Th2: 2x - 5 = -4
2x = 9 2x = 1
x = 4,5 x = 0,5
Vậy x E { 4,5 ; 0,5 }
(2.x -5)5 - 64 = 960
(2.x-5)5 = 960 + 64
(2.x-5)5 = 1024
(2.x-5)5 = 45
2.x - 5 = 4
2.x = 4 +5
2.x = 9
x = 9:2
x=4,5
(2x-5)^5-64=960
(2x-5)^5=1024
(2x-5)^5=4^5
2x-5=4 (vì mũ lẻ)
2x=9
x=4,5
Vậy x=4,5