Question 242745
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All you need at this point is the Zero Product Rule:


<i>If the product of two real numbers is zero, then at least one of the numbers in the product, i.e. one of the factors, must be zero.</i>


Which is to say:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ ab\ =\ 0\ \Leftrightarrow\ a\ =\ 0\ \text{or}\ b\ =\ 0]


Then you can solve the three linear equations that follow logically to find the three elements of the solution set.


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