сократие дробь : (a + √ a) / a√ a+a
(a+√a)/(a√a + a) = (a+√a)/(√a(a+√a)) = 1/√a = √a/a
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(a+√a)/(a√a + a) = (a+√a)/(√a(a+√a)) = 1/√a = √a/a