00:01
So looking at this, i've written two equations.
00:04
I've got x minus 2, or the difference of the two numbers is 2.
00:11
And then i've got x squared plus y squared is 10.
00:18
So what i want to do is i'm going to solve for x in the first equations.
00:22
I've got x equals 2 plus y.
00:27
And i'm going to put that into here.
00:29
So y plus 2.
00:33
Times y plus 2 plus y squared equals 10.
00:44
So now i have y squared plus 4y plus 4 plus y squared equals 10.
00:59
So let's like i have 2y squared plus 4 y.
01:05
And then if i bring that 10 over and i subtract it, i would have a negative 6.
01:11
As quickly, i see that i can take out a 2...