Question

10² +2 x (x-3) = 2²x5

Giải giúp mih nhé ai nhanh mih sẽ cho 5 sao

Answer 1

`10^2 + 2 xx (x-3) = 20`

`2(x-3)=-80`

`x-3=-40`

`x= -37`

Answer 2

10² +2 x (x - 3) = 2² x 5

<=> 100 + 2 (x - 3) = 4 x 5

<=> (x - 3) 100 + 2 = 4 x 5

<=> (x - 3) 102 = 20

<=> (x - 3) = 102 - 20 = 82

<=> (x - 3) = 82

<=> x = 82 + 3 = 85

Answer 3

10² + 2.(x - 3) = 2² . 5

100 + 2.(x - 3) = 4 . 5

100 + 2.(x - 3) = 20

2.(x - 3) = 20 - 100

2.(x - 3) = -80

x - 3 = -80 : 2

x - 3 = -40

x = -40 + 3

x = -37

Vậy x = -37