(
x
+
a
)
n
=
∑
n
k
=
0
(
n
k
)
x
k
a
n
−
k
Answers
Answered by
0
Answer:
Nice question
Step-by-step explanation:
(
x
+
a
)
n
=
∑
n
k
=
0
(
n
k
)
x
k
a
n
−
k
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