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Mathematics 9 Online
OpenStudy (anonymous):

Two depots A and B are 2km and 1km from OM. A supply station P is to be built on the highways such that the sum of the lengths of roads PA and PB is to be least. If OM IS 3km: a) express AP +PB in terms of x b) find the position of P that gives the least roadway from A to B

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