PLEASE HELP ME! I REALLY NEED THIS FOR A QUICK THING WITH MY ALGEBRA TEACHER!!

3) Complete the square and write the following in Vertex Form.
x2 - 8x + 12


4) Determine the factors
x2y + 3x2 + 3y + 9


5)
Write a polynomial that is a difference of two squares and describe how to factor it completely. Identify the zeros of the equation and the x-intercepts.


6) Write the polynomial that these are the factors for. (Hint: multiply the factors)
(3x - 7)(2x - 3y)