\( f(x)=2\left(x^{2}+3 x-2\right) \) y \( g(x)=-2\left(x^{2}-3 x-2\right) \), se pue afirmar que el resultado de \( f(x)-g(x) \) es:

The sum of two numbers is 18 . Their product is 72 . Find the numbers

Let \( f(x)=x^{2}+x-4 \), and \( g(x)=-2 \). Find all values for the variable \( x \), for which \( f(x)=g(x) \)

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

Let \( f(x)=\left(x-\frac{4}{5}\right)^{2} \). Find all values for the variable \( x \), for which \( f(x)=0 \)

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