Х/√а=х√а /(√а)²= х√а /а
3/√b=3*√b/(√b)²= 3*√b/b
2/7√y=2√y /(7(√y)²) =2√y /7y
a/b√6=a√6/(b√6² )= a√6/6b
4 4*(√a - b) 4*(√a - b) 4*(√a - b)
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√a +b (√a + b)(√a - b) (√a² - b²) a- b²
1 1*(√a+ b) √a+ b √a+ b
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√a- b (√a- b)(√a +b) √a ²- b² a - b²