How to factor x^2-2x-1

Which of the following are parts of a sphere

Find the vertex of the function given below y=x^2-6x+1

The classrooms are trying to raise $1,200.00 for charity. mrs. leblanc's class has raised 50%. mr. patel's class has raised $235.14 ms. warner's class has raised 1/3 as much as mrs. leblanc's class. how much more money is needed to reach the goal of $1,200.00?