Find the coefficient of x4 in the expansion of (1+x)^2 (2+x)^5
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Answered by
0
Answer:
5
Step-by-step explanation:
Answered by
0
Answer:
Step-by-step explanation:
(1+x)^2 (2+x)^5
r=0 0 0
r=1 1 1
r=2 2 2
possibilities are
22
therfore coff of x^4
2c2*5c2
10
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