A.\(I\left( { - 1;2; - 4} \right),\,\,R = 5\sqrt 2 \)
B.\(I\left( { - 1;2; - 4} \right),\,\,R = 2\sqrt 5 \)
C.\(I\left( {1; - 2;4} \right),\,\,R = 20\)
D.\(I\left( {1; - 2;4} \right),\,\,R = 2\sqrt 5 \)

A.\(D\left( { - 2;0;0} \right)\) hoặc \(D\left( { - 4;0;0} \right)\)
B.\(D\left( {0;0;0} \right)\) hoặc \(D\left( { - 6;0;0} \right)\)
C.\(D\left( {6;0;0} \right)\) hoặc \(D\left( {12;0;0} \right)\)
D.\(D\left( {0;0;0} \right)\) hoặc \(D\left( {6;0;0} \right)\)

A.\(V = \dfrac{{{a^3}\sqrt 3 }}{6}\)
B.\(V = \dfrac{{{a^3}\sqrt 3 }}{{12}}\)
C.\(V = \dfrac{{{a^3}\sqrt 3 }}{2}\)
D.\(V = \dfrac{{{a^3}\sqrt 3 }}{4}\)

A.
B.
C.
D.

A.\(y = 3{x^3} + 3x - 2\)
B.\(y = 2{x^3} - 5x + 1\)
C.\(y = {x^4} + 3{x^2}\)
D.\(y = \dfrac{{x - 2}}{{x + 1}}\)

A.\(P = 3\)
B.\(P = 1\)
C.\(P = 9\)
D.\(P = \dfrac{1}{3}\)

A.\(P = 1\)
B.\(P = 7 - 4\sqrt 3 \)
C.\(P = 7 + 4\sqrt 3 \)
D.\(P = {\left( {7 + 4\sqrt 3 } \right)^{2016}}\)

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

A.\(\int {f\left( x \right)dx}  = \dfrac{{{x^3}}}{3} - \dfrac{2}{x} + C\)
B.\(\int {f\left( x \right)dx}  = \dfrac{{{x^3}}}{3} - \dfrac{1}{x} + C\)
C.\(\int {f\left( x \right)dx}  = \dfrac{{{x^3}}}{3} + \dfrac{2}{x} + C\)
D.\(\int {f\left( x \right)dx}  = \dfrac{{{x^3}}}{3} + \dfrac{1}{x} + C\)

A.\(\dfrac{{x + 1}}{2} = \dfrac{y}{3} = \dfrac{{z - 2}}{1}\)
B.\(\dfrac{{x - 1}}{1} = \dfrac{y}{3} = \dfrac{{z + 2}}{{ - 2}}\)
C.\(\dfrac{{x + 1}}{1} = \dfrac{y}{3} = \dfrac{{z - 2}}{{ - 2}}\)
D.\(\dfrac{{x - 1}}{2} = \dfrac{y}{3} = \dfrac{{z + 2}}{1}\)