Question 245472
<font face="Garamond" size="+2">


First take an *[tex \Large x] out.


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x\left(3x^2\ +\ 10x\ +\ 7\right)]


Then note that *[tex \Large 7\ \times\ 1\ =\ 7] and *[tex \Large (3\ \times\ 1)\ +\ (7\ \times\ 1)\ =\ 10]


In order to factor the quadratic trinomial.


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