Verified answer

6

(a + √b)/a√b = (a+√b)*√b / a√b*√b = (a√b + b)/ab

9

(a + 2√(2a) + 2)/(√a + √2) = (a + 2√(2a) + 2)(√a - √2) / (√a + √2)(√a - √2) = (a√a + 2√(2a)√a + 2√a - a√2 - 2√(2a)√2 - 2√2) / (√a² - √2²) = (a√a + 2a√2 + 2√a - a√2 - 4√a - 2√2) / (a - 2) = (a√a + a√2 - 2√a - 2√2) / (a-2) =  ( a(√a + √2) - 2(√a + √2))/(a - 2) = (a - 2)(√2 + √a)/(a - 2) = √a + √2

Verified answer

Ответ:

Объяснение:

посмотри решение внизу