7549566 Microeconomic Theory. Suppose that an individual with income I cares about two goods, X and Y. The price of the two goods is and . The

Hi Andrea, I have a question about your solution.In b) How can I get expenditure function?you said E=I=2(PxPyU)^(1/2)-2Py.I don't know how you get this. Could you explain more?Also in b)at the very end,Isn't X'= {(PxPyU)^(1/2)}/2Px?because X* = (I+2Py)/2Px, so if I substitute X'to I,X'={(I+2Py)/2Px} = {2(PxPyU)^(1/2)-2Py+2Py}/2Px ={(PxPyU)^(1/2)}/2PxPlease let me know :) Thank you so much!