(P1.21)- The curve y = ax2 + bx + c shown in the accompanying figure passes through...

(P1.21)- The curve y = ax2 + bx + c shown in the accompanying figure passes through the points (x1, y1), (x2, y2), and (x3, y3). Show that the coefficients a, b, and c form a solution of the system of linear equations whose augmented matrix is

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