Question

12. In right angled triangle ABC, 2 C = 90° and D,
E, F are three points on BC such that they
divide BC in equal parts (see the given figure).
Prove that 8 (AF2 + AD2) = 11AC2 + 5AB2.


(Hint : Let AC = k and CF = FE = ED = DB = x.
Then, evaluate LHS and RHS and show
them both equal to 16k+ 80x“.]​

Answer 1

Answer:

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Answer 2

Answer:

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