###### Answer: D. 5(4)-6+5(4)-6

In mathematics the binomial coefficients are the positive integers that occur as coefficients in the binomial theorem.Commonly a binomial coefficient is indexed by a pair of integers n ≥ k ≥ 0 and is written (). It is the coefficient of the x k term in the polynomial expansion of the binomial power (1 + x ) n and is given by the formula =!!(−)!.For example the fourth power of 1 + x is

4 . Define e x to be the unique solution to the initial value problem … the integral expression is well-defined. … then k = 1. This is equivalent to characterization 1 (or 2 or 3) depending on which equivalent definition of e one uses. Characterization 2 implies …

In mathematics an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context. Mathematical symbols can designate numbers () variables operations functions brackets punctuation and grouping to help determine order of operations and other aspects of logical syntax. …

Notation. Several notations for the inve…