If in triangle ABC,AD is median and AE perpandicular BC then prove that ABsq +ACsq=2ADsq+1/2BCsq

If in triangle ABC,AD is median and AE perpandicular BC then prove tha

1.	If in triangle ABC,AD is median and AE perpandicular BC then prove that ABsq +ACsq=2ADsq+1/2BCsq
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