So this is going to be equal to 10. Let's see, 10 times 2 is 20. x times x is x squared. And you have 2 times 6 times xh. So this is going to be plus 12xh. And then this is going to be 2 times 6, which is 12 times 2 is 24xh. Plus 24xh. So this is going to be equal to 20x squared plus 36xh.