So, it is nonzero, but what about x bar squared; x bar squared is x squared bared, but x squared bar is 0 because x squared is in the ideal x squared.
तो, यह नॉन जीरो है, परंतु x2 बार का क्या, x2 बार 0 है क्योकि x2 आइडियल x2 मे है।