Question

Tìm x biết:

(x + 1/4) (x - 3/7) = 0

Answer 1

\(\left(x+\frac{1}{4}\right).\left(x-\frac{3}{7}\right)=0\)

=> \(x+\frac{1}{4}=0\) hoặc \(x-\frac{3}{7}=0\)

<=> \(x=\frac{-1}{4}\)              \(x=\frac{3}{7}\)

vậy x = \(\frac{-1}{4}\) hoặc x = \(\frac{3}{7}\)

Answer 2

\(\left(x+\frac{1}{4}\right)\left(x-\frac{3}{7}\right)=0\)

\(\Rightarrow\orbr{\begin{cases}x+\frac{1}{4}=0\\x-\frac{3}{7}=0\end{cases}}\)

\(\Rightarrow\orbr{\begin{cases}x=-\frac{1}{4}\\x=\frac{3}{7}\end{cases}}\)

Answer 3

\(\left(x+\frac{1}{4}\right)\left(x-\frac{3}{7}\right)=0\)

\(\Leftrightarrow\orbr{\begin{cases}x+\frac{1}{4}=0\\x-\frac{3}{7}=0\end{cases}}\Leftrightarrow\orbr{\begin{cases}x=-\frac{1}{4}\\x=\frac{3}{7}\end{cases}}\)

vậy,,,,,,,,

Answer 4

( x + 1/4 ) ( x - 3/7 ) = 0

<=> x + 1/4 = 0 hoặc x - 3/7 = 0

<=> x = - 1/4 hoặc x = 3/7