Question

`( 5 - x )^4 = 1`

Tìm x :)

Answer 1

(5 - x)⁴ = 1

( 5 - x ) = 1⁴

5 - x = 1

x = 5 - 1

x = 4

vậy x = 4

Answer 2

`(5-x)^4 =1`

`<=> [(5-x=1),(5-x=-1):}`

`<=> [(x=5-1=4),(x=5-(-1)=5+1=6):}`

Vậy `x in {4 ; 6}`

Answer 3

(5-x)^4=1

=>5-x=1 hoặc 5-x=-1

=>x=4 hoặc x=6