SclayP Messages 27 Reaction score 0 Thread starter Jul 17, 2013 #1 1.Find n, if the term 11 coefficient it is 6 time the term 10 coefficient in 2.(6x^7 + 5x^(-4))^n 3 Attachments img029.jpg 26.1 KB · Views: 459
mfb Mentor Insights Author Messages 37,487 Reaction score 14,377 Jul 17, 2013 #2 I am not sure what term 11 and 10 are (counted from what?), but you should not have all those powers of x in your calculation. The coefficient is the value in front of xwhatever.
I am not sure what term 11 and 10 are (counted from what?), but you should not have all those powers of x in your calculation. The coefficient is the value in front of xwhatever.
haruspex Science Advisor Homework Helper Insights Author Gold Member Messages 42,946 Reaction score 10,550 Jul 17, 2013 #3 81 looks right to me.