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Mathematics
Problem
The number of non-zero terms in the expansion of
(
1
+
3
2
x
)
9
+
(
1
−
3
2
x
)
9
(1 + 3\sqrt{2}x)^9 + (1 - 3\sqrt{2}x)^9
(
1
+
3
2
x
)
9
+
(
1
−
3
2
x
)
9
, is a. 0 b. 5 c. 9 d. 10
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