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4√105*√39
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GPT-5 mini
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4√105 * √39 = 4√(105·39) = 4√4095.
4095 = 9·455 = 3^2·455, so √4095 = 3√455.
Thus the product = 4·3√455 = 12√455.
4095 = 9·455 = 3^2·455, so √4095 = 3√455.
Thus the product = 4·3√455 = 12√455.
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