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Under root x+ under root x up to infinite time =6 find x

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  1. √(x+√(x+√(x+...))) = 6
    square both sides:
    x+√(x+√(x+√(x+...))) = 36
    x = 36-√(x+√(x+√(x+...)))
    x = 36-6 = 30

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