Question

3,7-\(\left|x-4,5\right|=0\)

\(\left(4x-3\right)\left(x-0,7\right)=0\)

Answer 1

a/ \(3,7-\left|x-4,5\right|=0\)

\(\Leftrightarrow\left|x-4,5\right|=3,7\)

\(\Leftrightarrow\left[{}\begin{matrix}x-4,5=3,7\\x-4,5=-3,7\end{matrix}\right.\)

\(\Leftrightarrow\left[{}\begin{matrix}x=8,2\\x=0,8\end{matrix}\right.\)

Vậy ...............

b/ \(\left(4x-3\right)\left(x-0,7\right)=0\)

\(\Leftrightarrow\left[{}\begin{matrix}4x-3=0\\x-0,7=0\end{matrix}\right.\)

\(\Leftrightarrow\left[{}\begin{matrix}x=\dfrac{3}{4}\\x=0,7\end{matrix}\right.\)

Vậy ..