The degree of the polynomial function \( f(x) \) is 3 . The roots of the equation \( f(x)=0 \) are \( -2,0 \), and 3 Which graph could be the graph of \( f(x) \) ?

Factorise the following as far as possible in \( \left(3 x^{2}+7 x\right)^{2}-4\left(3 x^{2}+7 x\right)-12 \)

5xy-si is 7 - \( 10 \mathrm{si}+3 x y \)

Factorise the following polynomial express theorem: \( f(x)=x^{3}-2 x^{2}-5 x+6 \)

Write the following expressions as simply as possible in correct algebraic notation: a) \( 7 d \times 5 \) (b) \( 12 r \div 4 \)

3. Dada la función polinómica \( f: \mathbb{R} \rightarrow \mathbb{R} \) definida por \( f(x)=2 x^{3}+2 x^{2}-8 x-8 \). Hallar todas las raíces reales, es decir, \( C_{0}(f) \) y factorizarla.