E
Editor
Sep 18, 2022
The 8th term of $(1+2x)^\frac{-1}{2}$ is
Difficulty: Easy
A:
-\frac{221}{16}x^{7}$
B:
-\frac{225}{18}x^{7}$
C:
-\frac{407}{9}x^{3}$
D:
-\frac{429}{16}x^{7}$
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ID: 63273db9ca83163ac3a117e7