\(\text{ĐKXĐ: }x\ge0;x\ne\pm1\)
\(2\sqrt{144x+144}-3\sqrt{100x-100}=12\)
\(2\sqrt{144\left(x+1\right)}-3\sqrt{100\left(x-1\right)}=12\)
\(2\sqrt{144}.\sqrt{\left(x+1\right)}-3\sqrt{100}.\sqrt{x-1}=12\)
\(2.12\sqrt{x+1}-3.10\sqrt{x-1}=12\)
\(24\sqrt{x+1}-30\sqrt{x-1}=12\)
\(6.\left(4\sqrt{x+1}-5\sqrt{x-1}\right)=6.2\)
\(4\sqrt{x+1}-5\sqrt{x-1}=2\)
\(\text{Mk bí r}\)