7. \( a, b \) ve \( c \) gerçel sayıları için \( a>0>b \cdot a \) \( b>c \) olduğuna göre, aşağıdakilerden hangisi kesinlil pozitiftir? \( \begin{array}{lll}\text { A) } a \cdot c & \text { B) } a \cdot b \cdot c & \text { C) } c \\ \text { D) } a+c & \text { E) } b^{2} \cdot c\end{array} \)

\( \sqrt{3}(x-y-2)+2 x-y=7 \) tenglamani butun sonlarda yeching. \( \begin{array}{ll}\text { A) }(2 ; 1) & \text { B) }(5 ; 3) \\ \text { C) }(3 ; 4) & \text { D) }(6 ; 4)\end{array} \)

9) Resolver las siguientes ecuaciones a. \( 4(x-2)+8=5 x-3 \)

\( \sqrt{3}(x-y-2)+2 x-y=7 \) tenglamani butun sonlarda yeching. \( \begin{array}{ll}\text { A) }(2 ; 1) & \text { B) }(5 ; 3) \\ \text { C) }(3 ; 4) & \text { D) }(6 ; 4)\end{array} \)

Stesso esponente \( \bigcirc \) ESERcIzIo GuIDA2 Esegui, usando le proprietà delle potenze. a. \( 5^{9} \cdot 3^{9}=\quad 9 \) b. \( 11^{11} \cdot 3^{11}= \) c. \( 10^{10} \cdot 52^{10}= \) d. \( 2,5^{6} \cdot 4^{6}= \) e. \( 1^{2} \cdot 2^{2} \cdot 3^{2}= \) f. \( 13^{20} \cdot 2^{20} \cdot 10^{20}= \)

A. Let \( p(x)=2 x^{2}+5 x-3, m(x)=2 x-1 \), and \( h(x)=\frac{x+1}{x-2} \) Find: 1. \( (m-p)(x) \) 2. \( p(5)+m(3)-h(1) \) 3. \( \frac{m(x)}{p(x)} \) 4. \( p(x+1) \) 5. \( p(3)-3(m(2) \) B. Given the following: - \( m(x)=5 x-3 \) - \( n(x)=x+4 \) - \( c(x)=5 x^{2}+17 x-12 \)