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Erwin

Komet #12

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    Diberikan bilangan real positif a,b,c,d yang memenuhi persamaan a^2+d^2-ad=b^2+c^2+bc dan a^2+b^2=c^2+d^2 . Tentukan nilai dari  ab+cd/ad+bc

Edited by Erwin
Kesalahan ketik

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