Hello, I have my finals next week, and I just can't figure out how to do these two problems! Please help, and explain step by step how to do them.

1.)"Using the method of "Completing the Square," determine the standard form of the quadratic equation, give the formula for the axis of symmetry, identify the vertex, and 'x' and 'y' intercepts."

F(X)=-2x^2-12x+3

2.) "Find the equation for f^-1(x) for the given function of f(x). Then verify that your equation is correct by showing that f(f^-1(x))=x and f^-1(f(x))=x."

F(X)=(4/x)+9

Thanks- TOkt