Negative one to the 4 3rds is equal to negative one, there's several ways you could do it. You could say negative one to the 4th, and then the cube root of that, or the cube root of negative one, and then raise that to the 4th power, either way. So let's do it the first way. Negative one to the 4th, and then take the cube root of that. Well, negative one to the 4th is just one, and then one to the 1 3rd power, well, that's just going to be equal to one. So what we have here in blue, that's just equal to one. So we have nine times 16 minus nine times one.