2) 8/(√6 + 1) = 8 · (√6 - 1)/(6 - 1) = 8(√6 - 1)/5
4) 3 /(х - √а) = 3(х + √а)/(х² - а)
6) 4/(√7 - √5) = 4(√7 + √5)/2 = 2(√7 + √5)
8) (х - √2)/(х + √2) = (х - √2)²/(х² -2)
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2) 8/(√6 + 1) = 8 · (√6 - 1)/(6 - 1) = 8(√6 - 1)/5
4) 3 /(х - √а) = 3(х + √а)/(х² - а)
6) 4/(√7 - √5) = 4(√7 + √5)/2 = 2(√7 + √5)
8) (х - √2)/(х + √2) = (х - √2)²/(х² -2)