A.\(x = 3a + 5b\)
B.\(x = {a^5}{b^3}\)
C.\(x = {a^5} + {b^3}\)
D.\(x = 5a + 3b\)

A.\(24\pi \sqrt 5 \)
B.\(48\pi \)
C.\(24\pi \)
D.\(f\left( t \right) = {t^2} + t\)

A.\(f\left( t \right) = 2{t^2} - 2t\)
B.\(f\left( t \right) = {t^2} - t\)
C.\(f\left( t \right) = t - 1\)
D.\(f\left( t \right) = {t^2} + t\)

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

A.\(4\pi {a^3}\)
B.\(\dfrac{{16}}{3}\pi {a^3}\)
C.\(16\pi {a^3}\)
D.\(\dfrac{{32}}{3}\pi {a^3}\)

A.\(0\)
B.\( - 5\)
C.\( - 1\)
D.\( - 2\)

A.\(S = \pi {r^2}\)
B.\(S = 4\pi {r^2}\)
C.\(S = \dfrac{4}{3}\pi {r^3}\)
D.\(S = \dfrac{3}{4}\pi {r^2}\)

A.1
B.3
C.4
D.2

A.\(\left( {1;4} \right]\)  
B.\(\left( { - \infty ;4} \right)\)
C.\(\left( { - \infty ;4} \right]\)
D.\(\left( {0;4} \right]\)

A.\(x = \dfrac{1}{4}\)
B.\(x =  - 4\)
C.\(x = \dfrac{1}{3}\)
D.\(x =  - 3\)