<PRE><B>Question 683342</B>
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FOIL = First, Outside, Inside, Last.


(a + b)(c + d) = ac (firsts) + ad (outsides) + bc (insides) + bd (lasts)


When you are done doing the 4 multiplications, collect like terms.


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
&lt;font face=&quot;Math1&quot; size=&quot;+2&quot;&gt;Egw to Beta kai to Sigma&lt;/font&gt;
My calculator said it, I believe it, that settles it
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