5. \( 4 x^{2}-3 x=0 \) tonliyini hall edin. \( \begin{array}{ll}\text { A) } 3 & \text { B) } 4 \\ \text { C) } 0 ; 0,75 & \text { D) } 1 \frac{1}{3}\end{array} \)

a) \( \frac{2}{7} x+\frac{5 x}{7}-3 x=8 \)

3. Factorize os seguintes polinómios: a) \( 2 x+a x+4 y+2 a y \) b) \( x^{3}-4 x \) \( \begin{array}{l}\text { 4. Sobre a equação do } 2^{\circ} \text { grau, determine a solução da seguinte eq } \\ \left.-2 x^{2}+3 x+5=0-1\right) \\ \text { 5. Encontre a solução do seguinte sistema de } 2 \text { equações: } \\ \qquad\left\{\begin{array}{c}2 x+4 y=11 \\ 5 x-15 y=-20\end{array}\right.\end{array} \)

14 Ber 10 pat Napata 18 분 D 8 2. 3472/1 (b) Selesaikan persamaan \( 5+4 \sqrt{k}=9+8 \sqrt{2} \). Tulis jawapan dalam bentuk \( a+b \sqrt{2} \) dengan \( a \) dan \( b \) ialah integer. Solve the equation of \( 5+4 \sqrt{k}=9+8 \sqrt{2} \). Write the answer in the form of \( a+b \sqrt{2} \) with \( a \) and \( b \) are integers. [2 markah] [2 marks]

3) The sign of function \( f(X)=7-X \) is not negative in .............. \( \begin{array}{lll}\text { (a) }]-\infty, 7[ & \text { (b) }[0,7[ & \text { (c) }]-\infty, 7]\end{array} \)

2. Find the domain and perform each of the following indicated operations. \[ \begin{array}{ll}\text { a. } \frac{x-1}{x+2}+\frac{x+3}{x^{2}+6 x+5} & \text { c. } \frac{x-1}{x+2} \times \frac{x+3}{x^{2}+6 x+5} \\ \text { b. } \frac{x-1}{x+2}-\frac{x+3}{x^{2}+6 x+5} & \text { d. } \frac{x-1}{x+2} \div \frac{x+3}{x^{2}+6 x+5}\end{array} \]