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Let ABC be a triangle such that angle ACB = 135 degrees. Prove that
AB^2 = AC^2 + BC^2 + ¡Ì2 x AC x BC.

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    You did not attempt any of the many problems you listed, therefore, don't be surprised if nobody chooses to help you.

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    We do not do your homework for you. After you have worked the problems, a teacher will be happy to make suggestions or corrections.

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