And that negative sign comes from this negative sign right over here. And then we have minus expected value of X times Y minus the expected value of X times this Y. Just doing the distributed property twice. And then finally you have the negative expected value of X times the negative expected value of Y. And the negatives cancel out. So you're just going to have plus the expected value of X times the expected value of Y. And of course it's the expected value of this entire thing.