Here is my original question httpwwwcheggcomhomeworkhelpques

Here is my original question:
http://www.chegg.com/homework-help/questions-and-answers/determine-general-solution-2-y-3-y-4-0-q2496787

How did he get the sqrt(24)?
shouldn\'t it be squareroot(23)?

we cannot view the solution as it was reated already