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When the origin is shifted to (-2,-3) an...

When the origin is shifted to (-2,-3) and the axes are rotated through an angle `45^(0)`, find the transformed equation of `2x^(2)+4xy-5y^(2)+20x-22y-14 = 0`.

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The correct Answer is:
the transformed equation (dropping dashes) is `x^(2) - 7y^(2) - 14xy - 2 = 0`
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