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In Delta ABC, DE norm AB. If AB = a, DE ...

In `Delta ABC`, DE norm AB. If AB = a, DE = x, BE = b and EC = c.

Then x expressed in terms of a, b and c is:

A

`(ac)/b`

B

`(ac)/(b+c)`

C

`(ac)/c`

D

`(ab)/(b+c)`

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