But we have to assume that x is not equal to negative 2. So this is equal to 6 times. So we're going to divide by x plus 2 in the numerator, x plus 2 in the denominator. So it's going to be 6 times x plus 1 over x minus 2 over x minus 2. And we have to put the constraint here because now we've changed it. Now, this expression over here is actually defined at x equals negative 2. But in order to be equivalent to the original function, we have to constrain it.