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The points A,B,C and D lies on the parabola y=ax2+bx+c, where the coordinates of points A,B and D is A(−2,14),B(−1,7) and D(2,10). The ordinate of C, for which the area of the quadrilateral ABCD is greatest, is

Answer» The points A,B,C and D lies on the parabola y=ax2+bx+c, where the coordinates of points A,B and D is A(2,14),B(1,7) and D(2,10). The ordinate of C, for which the area of the quadrilateral ABCD is greatest, is


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