Q 1686667577.     If `a, b` and `c` are the sides of a `Delta ABC`, then `a^(1/p) + b^(1/p) - c^(1/ p)`,

where `p > 1`, is

DSSB 2015 Paper 1
A

always negative

B

always positive

C

always zero

D

positive. if `1 < p < 2` and negative, if `p > 2`

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