Question 462044
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*[tex \LARGE \ \ \ \ \ \ \ \ \ \ xy\ =\ -36]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \frac{x}{2}\ -\ 11\ =\ y]


Solve by substitution:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x\left(\frac{x}{2}\ -\ 11\right)\ =\ -36]


Do a little algebra:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x^2\ -\ 22x\ +\ 72\ =\ 0]


Factor and solve.  Substitute back to find the appropriate *[tex \Large y] value for each root.


John
*[tex \LARGE e^{i\pi} + 1 = 0]
My calculator said it, I believe it, that settles it
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