Rezolvă urmatoarele probleme, folosind cifre romane in scrierea numerelor a) Intr-o sală de sport sunt 18 mingi de fotbal, de 3 ori mai putine mingi de baschet si cu 16 ma putine mingi de handbal decát cele de fotbal si baschet la un loc. Cate mingi sunt in total in sala de sport?

8. \( \int \frac{x+\pi}{x^{2}-3 \pi x+2 \pi^{2}} d x \)

Write the following expression as a single complex number: \( (-4+3 i)-(5+2 i) \) \( 1+5 i \) \( -9+5 i \) \( -9+i \) \( 1+i \)

The domain of the rational expression \( \frac{(x+2)(x+1)}{(x-1)(x-3)} \) is all real numbers EXCEPT a.) \( x=1 \) and \( x=3 \) b.) \( x=-1 \) and \( x=-2 \) c.) \( x=1 \) and \( x=2 \) d.) \( x=-1 \) and \( x=-3 \)

In Exercises \( 9-18 \), write the function in the form \( y=f(u) \) an \( u=g(x) \). Then find \( d y / d x \) as a function of \( x \). \( \begin{array}{ll}\text { 9. } y=(2 x+1)^{5} & \text { 10. } y=(4-3 x)^{9}\end{array} \)

If the first 5 terms of a geometric sequence are \( \left\{12,6,3, \frac{3}{2}, \frac{3}{4}\right\} \), then the formula for the \( n^{\text {th }} \) term in the sequence is a.) \( a_{n}=2 \cdot 12^{n-1} \) b.) \( a_{n}=\left(\frac{1}{2}\right) \cdot 12^{n-1} \) c.) \( a_{n}=12 \cdot\left(\frac{1}{2}\right)^{n-1} \) d.) \( a_{n}=12 \cdot 2^{n-1} \)