\(3\sqrt{x-1}-15=12\)
\(3\sqrt{x-1}=12+15=27\)
\(\sqrt{x-1}=27:3=9\)
\(\sqrt{x-1}=\sqrt{81}\)
x-1=81 => x = 82
\(3\sqrt{x-1}-15=12\)
\(3\sqrt{x-1}=12+15\)
\(3\sqrt{x-1}=27\)
\(\sqrt{x-1}=27:3\)
\(\sqrt{x-1}=9\)
\(\Rightarrow x-1=81\)
\(x=81+1\)
Vậy \(x=82\)
\(3\sqrt{x-1}-15=12\)
=>\(3\sqrt{x-1}=12+15\)
=>\(3\sqrt{x-1}=27\)
=>\(\sqrt{x-1}=27:3\)
=>\(\sqrt{x-1}=9\)
=>x-1=81
=>x=82
