Namodesto

Hi Melody, 

thank you so much for your help, however I still don't understand how you got 2x. And also why do you divide by x? 

Thank you so much! 

Hi Melody, 

http://math.stackexchange.com/questions/467592/derivative-of-frac-x-cdot-left1-3x-right-sqrtx-1?rq=1

I have problem understanding the last step. The following problem above was taken from an example of this website. How did he get to the final answer being -9x^2 + 13x - 2 from what I've written above? 

3^2 = 3*3 = 9 

 so, 

9 + 4+ 2 = 15 :) 

Thank you so much!! 

Thank you so much!! 

Thank you !! 

yes, i forgot to put it in my equation

11 

because 11*11=121