Ответы на вопрос:
а) 5²+3⁴-2⁵ = 25+3⁴-2⁵ = 25+81-32 = 74;
б) 3×7²-2⁴ = 3×49-2⁴ = 3×49-16 = 147-16 = 131;
в) 3×2⁶+2×9² = 3×64+2×9² = 3×64+2×81 = 192+162 = 354.
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