A.\(\left( {8;2} \right)\)
B.\(\left( {1;8} \right)\)
C.\(\left( {8; - 1} \right)\)
D.\(\left( {2;8} \right)\)

A.\( - 6\)
B.\( - 2\)
C.\(2\)
D.\(6\)

A.\(\left( {1;2} \right)\)
B.\(\left( {2; + \infty } \right)\)
C.\(\left( { - 2;2} \right)\)
D.\(\left( { - \infty ;1} \right)\)

A.\(\frac{a}{2}\)
B.\(\sqrt a \)
C.\({a^2}\)
D.\({2^a}\)

A.\(2\)
B.\(3\)
C.\(4\)
D.\(1\)

A.\(i\)
B.\( - 5\)
C.\(3\)
D.\(5\)

A.\({a^3}\)
B.\(3\sqrt 3 {a^3}\)
C.\(4{a^3}\)
D.\(2{a^3}\)

A.\(\left( { - \infty ;3} \right)\backslash \left\{ 1 \right\}\)
B.\(\left( { - \infty ;1} \right)\)
C.\(\left( {3; + \infty } \right)\)
D.\(\left( {1;3} \right)\)

A.\(10\)
B.\(7\)
C.\(8\)
D.\(11\)

A.\(720\)
B.\(120\)
C.\(96\)
D.\(600\)