00:01
Okay, so for this question, we want to find our center as well as our radius.
00:07
So we want to rewrite our equation that we have on our left in standard form.
00:12
So we'll start by grouping our x, and then we want to complete the square, or both our x and our y.
00:19
So this is a y squared plus 10y, and then plus something, and then we'll move our constants to our right -hand side.
00:27
So that's negative 4.
00:29
Okay, and now let's complete our square.
00:31
We'll take our b value here, so that's negative four divided by two.
00:36
That gives us negative two and then take it to the power of two.
00:39
So that's equal to four...