a) \( \left\{\begin{aligned}-\frac{1}{9} x-\frac{3}{5} y & =\frac{7}{45} \\ \frac{1}{8} x+\frac{1}{4} y & =\frac{1}{4}\end{aligned}\right. \)

8. \( 7^{x} \cdot(\sqrt{2})^{2 x^{2}-6}-\frac{7^{x}}{2^{2 x}}=0 \) kichik ildizini toping. \( \begin{array}{llll}\text { A) } 0 & \text { B) } 1 & \text { C) }-4 & \text { D) }-3\end{array} \)

5. If \( p(x) \) and \( q(x) \) are two polynomials such that \( p(x)+q(x)=x^{3}+x^{2}-x+4 \) and \( q(x)=x^{2}+b x \), which of the following could be \( p(x) \) ?

Find all values for the variable \( x \) such that \( f(x)=x \). \( f(x)=5 x+3 \)

Complete the square by adding the correct missing term on the left, then factor as indicated: \( \left.\qquad x^{2}+7 x+\square\right)^{2} \)

\( 3 x - 5 y ) ^ { 2 } = \)