Question

The coefficient of the term contaning x²yz in
the expression -7x2yz-4xyz is​

Answer 1

Answer:

Answer

Correct option is

A

6305

for Sum of coefficients which does not contains c(S1),put a=1,b=1,c=0,d=1 in (a+b+c+d)8

⟹S1=(3)8

for Sum of coefficients which does not contains c and b(S2),put a=1,b=0,c=0,d=1 in (a+b+c+d)8

⟹S2=(2)8

Sum of coefficients which  contains b but not c is 38−28=6305