Question

Giúp mình với

Answer 1

\(ĐK:x\ge2\\ PT\Leftrightarrow4\sqrt{x-2}=12\\ \Leftrightarrow\sqrt{x-2}=3\\ \Leftrightarrow x-2=9\\ \Leftrightarrow x=11\left(tm\right)\)

Answer 2

\(ĐKXĐ:x\ge2\)

\(7\sqrt{x-2}-3\sqrt{x-2}=12\\ \Leftrightarrow4\sqrt{x-2}=12\\ \Leftrightarrow\sqrt{x-2}=3\\ \Leftrightarrow x-2=9\\ \Leftrightarrow x=11\)