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MATH / The graph of x²−2xy+3y²=5 is an ellipse, although its axes are not parallel to the coordinate axes. Two horizontal lines and two vertical lines lie tangent to the ellipse, forming … · Discussion

Discussing The graph of x²−2xy+3y²=5 is an ellipse, although its axes are not parallel to the coordinate axes. Two horizontal lines and two vertical lines lie tangent to the ellipse, forming … · MATH

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