CET 2003

what is the sum of coefficients of (1+x-3x2)^3148 ???????
please answer fast the exam is tomorow

3 Answers

1
dimensions (dimentime) ·

is the ans 1 ???

1
Manas ·

yah its one of the options . i dont know the ans
wats ur logic

1
dimensions (dimentime) ·

when u expand u will get a1x6296+a2x6295+...+a6295x2+a6296x+a6297

for sum of coefficient = a1+a2+...+a6297, which can be obtained by putting x=1

so sum of coeff. will be = (1+1-3)3148 = 1

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