General Binomial Equation (Given)
Don’t waste memory space trying to remember this, it is given in the formula sheet
Binomial Equation for a specific term
Common Mistakes / Points To Take Note
- Tn = “n” th term = Tr+1 => n = r+1
- Don’t assume the r+1th term Tr+1 is “the term in xr “!
- Don’t rush in and waste time expanding the entire expression. Keep the Tr+1 expression in mind when asked to find or compare coefficients of specific terms.
nCr Formula (Given)
- That is not a matrix.
2 Methods to solve for
- Press “nCr” button on their calculators
- Where n is unknown, it’s worthwhile to be familiar with the following expressions for up till *nC4: (are you able to see a pattern?)