Question

plzzz solve this question.
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Answer 1

Ad2=ac2+cd2

Ab2=ac2+bc2

Rhs

=4ad2-3ac2

=4ac2+4cd2-3ac2

=ac2+(2cd)2

=Ac2+bc2............ Since d is midpoint ofbc

=Ab2

Hence proved

Answer 2

Answer in attachment