What is the vertex of the equation f(x) = x^2-12x+9

Can anyone me with 32,33,36,37,and 40.

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?