A. 1 Jika \( \mathrm{a}=2, \mathrm{~b}=3 \) dan \( \mathrm{c}=6 \) tentukan nilai dari \( \left(\frac{a^{-2} b^{3} c}{a^{-3} b^{2} c^{2}}\right)^{2} \) adalah \( \ldots . \). B. 2 C. 3 D. 4 E. 5

For the following system to be consistent, \( \left\{\begin{array}{l}6 x_{1}-3 x_{2}-2 x_{3}=-6 \\ 5 x_{1}-8 x_{2}+k x_{3}=-4 \\ -7 x_{1}+4 x_{2}+7 x_{3}=8\end{array}\right. \) we must have \( k \neq \square \) You may enter your answer as a fraction.

42. \( \frac{3 x+y}{2 x+3+z} \quad \operatorname{per} x=-\frac{1}{9} \quad y=\frac{1}{2} \quad, \quad z=\frac{2}{9} \)

\( \log _{3}(2 x-5)=-2 \) Simplify your ansh

If the system \( \left\{\begin{aligned}-4 x-5 y-4 z=-3 \\ -5 x+7 y-8 z=-7 \\ -6 x+19 y+h z=k\end{aligned}\right. \) has infinitely many solutions, then \( k=\square \) and \( h= \)

\begin{tabular}{l} B) DIRECTIONS: Solve each equation using the QUADRATIC FORMULA: \( x= \) \\ \( \qquad \)\begin{tabular}{|l|l|l}\hline 5\( ] c^{2}-5 c+4=0 \) & \( 6] b^{2}-b-12=0 \) & \( 73 a^{2}-4 a-12=0 \) \\ \hline\end{tabular} \\ \hline\end{tabular}