Question

(X-1) mũ 2 = 36

 

Answer 1

(x-1)²=36

(x-1)²=6²

x-1=6

x=7

Answer 2

=>x-1=6 hoặc x-1=-6

=>x=-5 hoặc x=7

Answer 3

(x-1)²=36

(x-1)²=6²

x-1=6x=7

Answer 4

`(x-1)^2 =36`

`(x-1)^2 = (+-6)^2`

`=>[(x-1=6),(x-1=-6):}`

`=> [(x=6+1=7),(x=-6+1=-5):}`

Vậy `x in {7;-5}`

Answer 5

\(\left(x-1\right)^2=36< =>\left[{}\begin{matrix}x-1=-6< =>x=-5\\x-1=6< =>x=7\end{matrix}\right.\)

Answer 6

(x-1)²=36

(x-1)²= 6²

=> \(\left[{}\begin{matrix}x-1=6\\x-1=-6\end{matrix}\right.\)

=> \(\left[{}\begin{matrix}7\\-5\end{matrix}\right.\)

Vậy x \(\in\) {7;-5}