6) Let n be a positive integer such that 7 | (52n-1 +22n-1). Prove that 7 || (52n+1+22n+¹). (Hint: Rewrite 52n+1+22n+1, where a portion of the expression is 7 times 52n-1+22n-1, and the rest of the expression is also divisible by 7.) 7) Civa o gum of life Mosuom alchon: Plango im lanath

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