That's just exponent properties. X to the 5 3rd dx. Many of you might have just gone straight to this step right over here. And then once again, we just have to use the reverse power rule. This is going to be x to the, we increment this 5 3rds by one or we can add 3 3rds to it. So it's x to the 8 3rds and then we divide by 8 3rds and multiply by its reciprocal. So we could just say 3 8ths times x to the 8 3rds and of course we have r plus c. And verify this.