the power is usually low in additional math for binomial theorm as in 1<= n <= 10
some of us who find combination method difficult use the triangle law
i don't remember the name for this
its like this
1 1
1 2 1
1 3 3 1
1 4 6 4 1
and so on ...keep on adding the middle numbers of the previous row..to get the next one..
for example if they say to (a+b)^4 --> the power is 4 soo chk out d pattern in the triangle
its 1 4 6 4 1
these numbers will act as coeffecients..
therefore (a+b)^4 = (a+b)4 = a4 + 4a3b + 6a2b2 + 4ab3 + b4