Question

[trịnh đăng khoa]

(x-1)³=8^{4 ai nhanh tớ tik cho}

Answer 1

[camilecorki]

( x - 1 )³ = 8⁴ 

( x - 1 )³ = ( 2³ )⁴

( x - 1 )³ = 2^3.4

( x - 1 )³ = 2¹² 

( x - 1 )³ = ( 2⁴ )³ 

( x - 1 )³ = 16³

=> x - 1 = 16

=> x      = 17

Vậy x = 17