A nice Japanese Algebra Question. Math Olympaid Question. #g10math

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Or just do by inspection. What 2 powers of 4 add up to 20. 4 and 16 which are 4 to power 1 and 4 to power 2. Therefore x = 1. Not sprout per se. 😊❤

davidcawthorne
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This's not Olympiad question.
I can solve it with mental arithmetic 😂😂😂

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