00:01
In this problem, we're being asked to solve the nonlinear system of equations.
00:04
To do this, i'm going to use the substitution method.
00:07
Because if you notice in our first equation, we already have y by itself.
00:11
It's equal to x squared minus 4.
00:12
So i can simply substitute in place of y in that second equation.
00:16
So when i do that, i'm going to have x squared minus 4 is equal to x squared minus 4x.
00:23
And now we just need to solve for x.
00:25
So first, i'm going to combine my x squared terms.
00:27
So i'm going to subtract x squared from both sides...