The coefficient of x9 in the expansion of (1+x)(1+x2)(1+x3)….(1+x100) is
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be the coefficient of four consecutive terms in the expansion of (1+x)n,
then prove that: a1+a2a1+a3+a4a3=a2+a32a2˙
Find an approximation of (0.99)5using the first three terms of its expansion.
Find the coefficient of x4 in the expansion of (2x−x23)10.
Expand of the expression : (2x−3)6
Find the number of nonzero terms in the expansion of (1+32x)9+(1−32x)9˙
Write the general term in the expansion of (x2−y)6.
Find the value of
Using binomial theorem, indicate which number is larger (1.1)10000or 1000.