See what we can offer to your school
"SimpleStudy just makes sense...”
Get the best plan for your school
10 questions from this quiz
An expression with two terms
n+1n + 1n+1 terms
Sum of two numbers directly above it
n!r!(n−r)!\frac{n!}{r!(n-r)!}r!(n−r)!n!
120120120
r=7r = 7r=7
nnn
With decreasing powers of xxx
They decrease from nnn to 000
∑k=0n(nk)xn−kbk\sum_{k=0}^{n} \binom{n}{k} x^{n-k} b^k∑k=0n(kn)xn−kbk
Select your subjects, and get access to A+ resources today.