Binomial theorem: Divisibility problems SE1: Show that 2^(3n+3)-7n-8 is divisible by 49

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Binomial theorem: Divisibility problems SE1: Show that 2^(3n+3)-7n-8 is divisible by 49 Support the channel:
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I checked this method out in many long videos but none were helpful nd guess what I came across this 1 min 45 sec video which nailed the concept

rahelaalavi