Question

Tìm x để biểu thức A=\(\sqrt{9x-6}-\dfrac{2022}{2x-1}\)có nghĩa

Answer 1

ĐKXĐ: \(\left\{{}\begin{matrix}9x-6>=0\\2x-1< >0\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}x>=\dfrac{2}{3}\\x< >\dfrac{1}{2}\end{matrix}\right.\)

Answer 2

ĐKXĐ

\(\left\{{}\begin{matrix}9x-6\ge0\\2x-1\ne0\end{matrix}\right.\)

\(\Leftrightarrow\left\{{}\begin{matrix}9x\ge6\\2x\ne1\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}x\ge\dfrac{2}{3}\\x\ne\dfrac{1}{2}\end{matrix}\right.\)