b,c
bc or b*c or b.c or bxc depending on the notation being used.
42http://en.wikipedia.org/wiki/Catalan_number
The sides
Express 2,750,389 in scientific notation
In the C and C++ languages the array notation arr[i] is completely equivalent to the pointer notation *(arr + i).
The Greek letter pi. pi(abcd) represents permutations of the letters in the set {a,b,c,d}.
(b b b)( b b b )(b d g a)(b....)(c c c c)(c b b b)(a a a b)(a...d)(b b b)(b b b)(b d g a)(b....)(c c c c)(c b b b)(d d c a)(g.....)
Your notation is confusing. It looks like: 8a3 + 4a2b - 2ab2 - b3. So if you look at it, notice 23 = 8 & 22 = 4, so take c = (2*a), and you have c3 + c2b - cb2 - b3, Now note that if c = b, the polynomial is zero, so (c-b) or (b-c) is a factor. So divide by (c-b) using long division: (c - b)(c2 + 2cb + b2) {the second polynomial is a perfect square: (c+b)2}, so (c-b)(c+b)2, then substitute c = 2a, and get (2a-b)(2a+b)2 finally, multiply it out to make sure you get the original polynomial.
Suppose p = a*10^x andq = b*10^y are two numbers in scientific notation.Then p*q = (a*b)*10^(x+y)where, 1
a b c a c a d a c c c a c b b b a a c b b b a c c b
a b c c c c b a g g a b g a b c c c c b a g b a a b c c c c b a g g a b a b c d b c e c b a b a g g