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  1. L

    specific divisibility induction question

    woah, simpler than i thought. thanks a lot
  2. L

    specific divisibility induction question

    hey there. ive been struggling with this q for ages, i always get stuck at step 3. help will be much appreciated :) prove that: 3³ⁿ + 2 ⁿ⁺² is divisible by 5
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