Ответ:
При \(a=0,93\), \(b=0,57\): \(\sqrt{a-b}=\sqrt{0,93-0,57}=\sqrt{0,36}=0,6\).
При \(a=\frac34\), \(b=-\frac1{18}\): \(\sqrt{a-b}=\sqrt{\frac34+\frac1{18}}=\sqrt{\frac{27}{36}+\frac{2}{36}}=\sqrt{\frac{29}{36}}=\frac{\sqrt{29}}6\).
Ответ: 0,6; √29/6.
