Tìm các giá trị của \(x\) biết:
a) \(\sqrt x - 2 = 0\) b) \(\sqrt {{{\left( {x - 4} \right)}^2}} = 2x + 1\)
A.\(\begin{array}{l}a)\,\,x = 1\\b)\,\,x = 1\end{array}\)
B.\(\begin{array}{l}a)\,\,x = 2\\b)\,\,x = 3\end{array}\)
C.\(\begin{array}{l}a)\,\,x = 1\\b)\,\,x = - 1\end{array}\)
D.\(\begin{array}{l}a)\,\,x = 4\\b)\,\,x = 1\end{array}\)
a) \(\sqrt x - 2 = 0\) b) \(\sqrt {{{\left( {x - 4} \right)}^2}} = 2x + 1\)
A.\(\begin{array}{l}a)\,\,x = 1\\b)\,\,x = 1\end{array}\)
B.\(\begin{array}{l}a)\,\,x = 2\\b)\,\,x = 3\end{array}\)
C.\(\begin{array}{l}a)\,\,x = 1\\b)\,\,x = - 1\end{array}\)
D.\(\begin{array}{l}a)\,\,x = 4\\b)\,\,x = 1\end{array}\)
Loga
Hóa Học lớp 12
