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Mathematics, 23.11.2020 23:40 krandall232
Prove by mathmatical induction 1.2²+2.3²+3.4²+n(n+1)=n(n+1)(n+2)(3 n+5)/12
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Prove by mathmatical induction 1.2²+2.3²+3.4²+n(n+1)=n(n+1)(n+2)(3 n+5)/12...
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