What is int0^1 x(1-x)^n dx equal to...

What is `int_0^1 x(1-x)^n dx` equal to

A

A. `1/(n(n+1))`

B

B. `-1/((n+1)(n+2))`

C

C. 1

D

D. 0

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The correct Answer is:

B

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