00:01
For this problem, we have been given a nonlinear system of equations.
00:04
X squared minus y equals zero, and x squared minus 4x plus y equals zero.
00:10
And we can do either substitution or elimination for this problem.
00:15
I'm going to do substitution.
00:18
And i'm going to take this top equation and solve for y.
00:22
Y equals x squared.
00:24
And i'm going to substitute that into my second equation.
00:27
So that gives me x squared minus 4x plus y.
00:33
Well, y is x squared.
00:36
I can simplify this.
00:37
I can add my like terms...