<PRE><B>Question 1029614</B>
coefficient of x^46 in expansion of (2x-1)^100
:
we use the binomial expansion theorem
:
a=2x, b=-1, 100-46=54
:
coefficient of x^46 = 100C54 * (2x)^(100-54) * (-1)^54 =
: 
73.470998191e+27 * 70.368744178e+12 * 1 =
:
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5.170061876e+42
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:
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