**２つ の 新 の 数学 の法則 。。 過ぎ の 文章**

Thm-1;Whats the sum of the coefficients in the expansion .. ..Then we have

sum-of-all-coefficients= .Also total possible combinations of n things is .

Thm-2;In the above expansion the sum of odd coefficient is same as the sum of even coefficient. put x=-1, then from above;1+∑

even- coefficients= ∑odd-coefficients= 1/2(∑all-coefficients) =

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