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An equilateral triangle ABC has its centroid at the origin and one side 'AC' isx+y=1 IfA(X_1,Y_1), B(x_2,y_2),C(x_3,y_3) " be the vertices of the equilateral triangle. Then " x_1x_2+x_2x_3+x_3x_1= |
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Answer» -1 |
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