Buktikan bahwa setiap bilangan asli n berlaku

Saluranedukasion 2024-07-10T14:47:00.000Z

Buktikan bahwa setiap bilangan asli n berlaku 1.2+2.3+3.4+..+n(n+1)=(1)/(3) n(n+1)(n+2)
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Buktikan bahwa setiap bilangan asli n berlaku 1.2+2.3+3.4+..+n(n+1)=(1)/(3) n(n+1)(n+2)