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I don't know about that but I don't know about that but I don't know about that but I don't know about that
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Step-by-step explanation:
4 / √11 - √7 = 4 / √11 - √7 × √11 + √7 / √11 + √7 = 4(√11+ √7) / 11 - 7 = 4/4 (√11 + √7) = √11 + √7
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