Rotate the Axes So That the New Equation Contains No $x^{2}+2 x y+y^{2}-8 x+8 y=0$

question 46

Multiple Choice

Rotate the axes so that the new equation contains no xy-term. Graph the new equation.
- $x^{2}+2 x y+y^{2}-8 x+8 y=0$

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