A.\(24\)
B.\(21\)
C.\(25\)
D.\(20\)

A.\(5\)
B.\(4\)
C.\(6\)
D.\(3\)

A.\(4\)
B.\(2\sqrt 2 \)
C.\(2\)
D.\(\sqrt 2 \)

A.\(2x - 2y + 4z - 21 = 0\)
B.\(2x - 2y + 4z + 21 = 0\)
C.\(3x - 2y + z - 12 = 0\)
D.\(3x - 2y + z + 12 = 0\)

A.\(\left( { - \infty \,;\,3} \right]\)
B.\(\left( {0\,;\,3} \right]\)
C.\(\left[ { - 3\,;\,3} \right]\)
D.\(\left( { - \infty \,;\, - 3} \right] \cup \left[ {3\,;\, + \infty } \right)\)

A.\(\dfrac{{4\sqrt 2 }}{3}a\)
B.\(\sqrt {14} a\)
C.\(\dfrac{{4\sqrt {14} }}{7}a\)
D.\(\dfrac{{8\sqrt {14} }}{7}a\)

A.\(\left( { - \infty ;1} \right]\)
B.\(\left( { - \infty ;4} \right]\)
C.\(\left( { - \infty ;1} \right)\)
D.\(\left( { - \infty ;4} \right)\)

A.810.000.000
B.813.529.000
C.797.258.000
D.830.131.000

A.\(2{e^x} + 2{x^2} + C.\)
B.\(\dfrac{1}{2}{e^{2x}} + {x^2} + C.\)
C.\(\dfrac{1}{2}{e^{2x}} + 2{x^2} + C.\)
D.\({e^{2x}} + 4{x^2} + C.\)

A.\( - 2\)
B.\( - 3\)
C.\( - 5\)
D.\( - 4\)