Question 244344
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Add -1 to both sides:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 2x^2\ +\ 7x\ -1\ =\ 0]


Which is standard form.


To calculate the discriminant, *[tex \LARGE \Delta],


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \Delta\ =\ b^2\ -\ 4ac]


Observe that *[tex \LARGE a\ =\ 2], *[tex \LARGE b\ =\ 7], and *[tex \LARGE c\ =\ -1]


Plug in the values and do the arithmetic.


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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