00:01
We're being asked to solve the given nonlinear system of equations.
00:04
Well, to do that, i'm going to use the substitution method.
00:07
So if you look at the first equation, we see that y is equal to x squared plus two.
00:12
So now i simply need to substitute x squared plus two in for y in the second equation.
00:18
So what we're going to have is x squared plus two is equal to negative x squared plus four.
00:24
And now we just need to solve this equation.
00:26
Well, first i'm going to get my x squared terms on the same side.
00:29
So to do that, i'm going to add x squared.
00:34
Well, x squared plus x squared is 2x squared, and then i'll have plus 2 is equal to 4.
00:41
So now we have to isolate the x squared term.
00:44
So to do that, i'm going to subtract 2 from both sides.
00:46
So we'll have 2x squared is equal to 2.
00:49
And then, as you can see, i ran out of room, so i'm going to come up here.
00:53
So i have 2x squared is equal to 2.
00:54
Then we're going to divide both sides by 2.
00:56
So x squared is equal to 1...