So let's first think about this, let me pick some colors I haven't used yet. So let's think about the interval from negative infinity to zero. So this is the open interval from negative infinity to zero. And we could just plug in a value, we could, let's try negative one. Negative one is pretty straightforward to evaluate. So let's see, you have four, you're gonna have four times negative one to the third power so that's gonna be four times negative one, minus five times negative one to the fourth power. So that's just gonna be one.