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DeltaABC and DeltaDBC are on the same ba...

`DeltaABC` and `DeltaDBC` are on the same base BC but on opposite sides of it. AD and BC intersect each other at O. If AO=a cm, DO=b cm and the area of `DeltaABC=x cm^(2)`, then what is the area (in `cm^(2)`) of `DeltaDBC`?

A

`(ab)/2` x

B

`a/b` x

C

`(a+b)/2` x

D

`(bx)/a`

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