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BL and CM are medians of a DeltaABC righ...

BL and CM are medians of a DeltaABC right angled at A. Prove that `4(BL^(2)+CM^(2))= 5BC^(2)`.

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The correct Answer is:
`4(BL^(2) + CM)^(2) = 5 BC^(2)` .
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