Binomial Expansion Question Watch
- Thread Starter
- 13-04-2011 18:06
- 13-04-2011 18:12
1) Expand each one individually first. In your example, you'll have (5+2x)(quintic polynomial in x), which you can then expand again.
2) What should the coefficients of x and x^2 be in terms of k?
One liners, but hopefully they help
- 13-04-2011 18:13
For the first one, do the expansion of the second bracket, then once you have the expansion, times the expansion by the first bracket.
For the second one, sub in your numbers and constants into the binomial expansion equation. For example, the second term, you know kxn=-4x, so kn=-4. You will get simultaneous equations
Hope that helps to get started