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Find a least-squares solution of Ax=b by (a) constructing the normal equations for x^ and (b) solving for x^. A=111121,b=412 a. Construct the normal equations

Find a least-squares solution of Ax=b by (a) constructing the normal equations for x^ and (b) solving for x^. A=111121,b=412 a. Construct the normal equations for x^. [x1x2]= (Simplify your answers.)

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