See what we can offer to your school
"SimpleStudy just makes sense...”
Get the best plan for your school
10 cards from this deck
It describes expanding expressions like (1 + x)^n.
A triangle of numbers where each number sums the two above.
It's (1 + x)^n = ∑(n choose r) x^r from r=0 to n.
It represents ways to choose r items from n.
The first row is 1.
Each number is the sum of the two numbers above it.
Every row starts and ends with 1.
It equals 2^n.
It provides coefficients for binomial expansions.
It's (n choose r) = (n-1 choose r-1) + (n-1 choose r).
Select your subjects, and get access to A+ resources today.