Can someone please help me with this? I don’t understand proofs very well.

Using the completing-the-square method, find the vertex of the function f(x) = 2x2 − 8x + 6 and indicate whether it is a minimum or a maximum and at what point. maximum at (2, –2) minimum at (2, –2) maximum at (2, 6) minimum at (2, 6)

Find the indicated value, where g(t) = t^2-t and f(x)= 1+x a. -2 b. 0 c. 2 d. 8

What is the value of x in the equation (2)3) (x+6)= -18 a. -36 b. -33 c. -24 d. -18