Đề sai à bn

đề tui đúng mà

Lời giải:

$x^3-6x^2+12x-8=0$

$\Leftrightarrow (x-2)^3=0$

$\Leftrightarrow x-2=0$

$\Leftrightarrow x=2$

\(x^3-6x^2+12x-8=0\)

`<=>x^3-3.x^3.2+3.x.2^2-2^3=0`

`<=>(x-2)^3=0`

`<=>x-2=0`

`<=>x=2`

\(x^3+9x^2+27x+27=0\)

\(\Leftrightarrow x^3+3.x^2.3+3.x.3^2+3^3=0\)

\(\Leftrightarrow\left(x+3\right)^3=0\)

`<=>x+3=0`

`<=>x=-3`

\(x^3+9x^2+27x+27=0\)

\(\Leftrightarrow x^3+3.3.x^2+3.9x+3^3=0\)

\(\Leftrightarrow\left(x+3\right)^3=0\)

\(\Rightarrow x+3=0\Rightarrow x=-3\)

hat you ai im mai tơ im yến i 8 qua yu leo tần yes o no yes ok mai ơ tơ like ok 

\(x^3+3x^2+3x+1=0\\ \left(x+1\right)^3=0\\ x+1=0\\ x=-1\)

giúp vs

1 Tom didn't fix the refrigerator last monday

2 did her husband put a bunch of flowers on her desk?

3 she wasn't helping her dad at 11 am yesterday

4 were most of them safe after the accident?

5 he wasn't making any hot chocolate at 1:30 this morning

6 was I looking for my watch when the phone rang?

7 were you so scared when we heard a strange sound?

8 Anna didn't eat a lot of pizza at the party last night

9 did the doctor wash her hands after touching the patients?

40.H2O = 80H liên kết 20.O2 

a⁵+b⁵=110

Cho mình xin câu trả lời chi tiết đc ko bạn???

`x-4` mũ `2=36`

TH1

`x-4=6`

`x=10`

TH2

`x-4=-6`

`x=-2`

Vậy `x=10` hoặc `x=-2`

(x - 4)² - 36 = 0

       (x - 4)² = 0 + 36

       (x - 4)² = 36

       (x - 4)² = 6² = (-6)²

TH1 : (x - 4)² = 6²

              x - 4 = 6

                   x = 6 + 4 

                   x = 10

TH2 : (x - 4)² = (-6)²

              x - 4 = -6

                   x = -6 + 4

                   x = -2

vậy x ϵ {-2;10}