1 The cubic polynomial \( f(x) \) is given by \( f(x)=2 x^{3}+a x^{2}+b x+c \), where \( a, b, c \) are constants. The graph of \( f(x) \) intersects the \( x \)-axis at the points with coordinates \( (-3,0),(2 \cdot 5,0) \) and \( (4,0) \). Find the coordinates of the point where the graph of \( f(x) \) intersects the \( y \)-axis.

d) \( \frac{3^{4}: 3}{3^{2}}= \)

Сложите почленно неравенства. \( 11<13 \) и \( 5,1>2,7 \)

Aplica el método de fracciones parciales a la función: \( \frac{x^2 + 2}{(x-1)(x+3)} \)

If \( 33-a=a+27-5 a \), what is the value of \( 33+3 a ? \)

Calaula las saguientes determinantes \( \begin{array}{ll}\text { a) }\left|\begin{array}{cc}-8 & 9 \\ -1 & 20\end{array}\right| & \text { b }\left|\begin{array}{ll}2 & \frac{1}{3} \\ \frac{1}{2} & -1\end{array}\right| \text { c) }\left|\begin{array}{cc}5 & -a \\ 2 a & 4 a^{2}\end{array}\right|\end{array} \)