#1.

http://item.slide.com/r/1/7/i/ENMgoz...5Qgi6aC9p8h3u/

#2.

http://item.slide.com/r/1/94/i/eLbk5...gX4HppC52H43O/

http://item.slide.com/r/1/43/i/CJVak...0HlJXRNTIaaB6/

I need some help finding the Max and Min of this function. As you can see I took the derivative and set it equal to zero. I know that I need the Critical Points in order to find the Max/Min, but I am wondering how I should isolate the x in order to do so. If I multiply out then I loose my x.