Question

Tìm x biết:

a) 5x (x - 1/3) = 0

Answer 1

Bài làm 

\(5x\left(x-\frac{1}{3}\right)=0\Leftrightarrow\orbr{\begin{cases}x=0\\x=\frac{1}{3}\end{cases}}\)

Answer 2

\(5x\left(x-\frac{1}{3}\right)=0\)

\(\Leftrightarrow\orbr{\begin{cases}5x=0\\x-\frac{1}{3}=0\end{cases}}\Leftrightarrow\orbr{\begin{cases}x=0\\x=\frac{1}{3}\end{cases}}\)

vậy x=0 hoặc x=1/3

Answer 3

\(5x\left(x-\frac{1}{3}\right)=0\)

\(\Leftrightarrow\orbr{\begin{cases}x=0\\x=\frac{1}{3}\end{cases}}\)

Answer 4

5x ( x - 1/3 ) = 0

<=> 5x = 0 hoặc x - 1/3 = 0

<=> x = 0 hoặc x = 1/3 

Answer 5

5×(x-1/3)=0

(x-1/3)=0:5

(x-1/3)=0

x=0+1/3

x=1/3

vậy x=1/3

Answer 6

\(5.\left(x-\frac{1}{3}\right)=0\)

     \(x-\frac{1}{3}=0:5\)

     \(x-\frac{1}{3}=0\)

                \(x=0+\frac{1}{3}\)

                \(x=\frac{1}{3}\)

Answer 7

5x (x -1/3) = 0
<=> 5x = 0 hoặc x - 1/3 = 0
*1: x=0       *2: x= 1/3