If A : B = C : D = E : F , Let Us Prove That–(a²+c²+e²)(b²+d²+f²) = (ab+cd+ef)² - ConceptEra

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If a : b = c : d = e : f , let us prove that–(a²+c²+e²)(b²+d²+f²) = (ab+cd+ef)²

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