We can divide both sides by 2, and you get x to the 4th power is equal to 256. And so what is the 4th root of 256? Well, we could take the square root of both sides just to help us here. So let's see, if we take, so it's going to be x squared is going to be equal to, 256 is 16 squared, so this is 16, this is going to be x squared is equal to 16, or x is equal to 4. Now, that's our only critical point we have, so that's probably the x value that minimizes our sum of squares right over here, but let's make sure it's a minimum value, and to do that, we can just do our second derivative test. So let's figure out, let's take the second derivative, s prime prime of x, and figure out if we are concave upwards or downwards when x is equal to 4. So s prime prime of x is going to be equal to 2, and then we're going to have negative 3 times negative 512, so I'll just write that as plus 3 times 512, that's going to be 1536, is that right?