How do i write this equation in standard form and how do i find the center and radius of the circle?
x squared + y squared + 2x - 2y - 2 = 0
x squared = x^2, when written online. You can factor the equation into the following:
x(x+2) + y(y-2) - 2 = 0
How to find the center and radius of a circle depends on the information you have. For example, if you know the diameter, you divide that value by 2 for the radius. What information do you already have?
I hope this helps. Thanks for asking.