A.\(4\)
B.Vô số
C.\(3\)
D.\(5\)

A.\(H\left( {1;2;1} \right)\)
B.\(H\left( { - 8;4;3} \right)\)
C.\(H\left( {4; - 4;1} \right)\)
D.\(H\left( {1; - 2;3} \right)\)

A.\(3{e^{3x}} + x + C\)
B.\(3{e^{3x}} + C\)
C.\(\dfrac{1}{3}{e^{3x}} + C\)
D.\(\dfrac{1}{3}{e^{3x}} + x + C\)

A.\(\overline z  =  - 3 + 5i\)
B.\(\overline z  =  - 3 - 5i\)
C.\(\overline z  = 3 + 5i\)
D.\(\overline z  = 3 - 5i\)

A.\({\left( {x - 3} \right)^2} + {\left( {y + 1} \right)^2} + {\left( {z - 4} \right)^2} = \dfrac{{529}}{{49}}\)
B.\({\left( {x + 3} \right)^2} + {\left( {y - 1} \right)^2} + {\left( {z + 4} \right)^2} = \dfrac{{529}}{{49}}\)
C.\({\left( {x + 3} \right)^2} + {\left( {y - 1} \right)^2} + {\left( {z + 4} \right)^2} = \dfrac{{23}}{7}\)
D.\({\left( {x - 3} \right)^2} + {\left( {y + 1} \right)^2} + {\left( {z - 4} \right)^2} = \dfrac{{23}}{7}\)

A.\({a^{20}}\)
B.\({a^{\frac{4}{5}}}\)
C.\({a^5}\)
D.\({a^{\frac{5}{4}}}\)

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

A.\(0\)
B.\(4036\)
C.\(1\)
D.\( - 1\)

A.science
B.scientist
C.scientific
D.scientifically

A.degrees
B.grades
C.colleges
D.vacancies