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7∀6=74∀2=126∀3=1208∀6=?\begin{aligned}7\forall 6&=&7\\ 4\forall 2&=&12\\ 6\forall 3&=&120\\ 8\forall 6&=&?\end{aligned}7∀64∀26∀38∀6====712120?
Define a binary operation ∀\forall∀ such that the conditions above are fulfilled. Find function of this binary operation. And evaluate ?+82? +8^2?+82.
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