$\sqrt{(17,1{)}^2}=|17,1|=17,1$

$\sqrt{(-1,17{)}^2}=|-1,17|=1,17$

$\frac{1}{2}\sqrt{(62{)}^2}=\frac{1}{2}\ast |62|=\frac{1}{2}\ast 62=31$

$-2,4\sqrt{(-4{)}^2}=-2,4\ast |-4|=-2,4\ast 4=-9,6$

$\sqrt{{11}^4}=\sqrt{({11}^2{)}^2}=|{11}^2|={11}^2=121$

$\sqrt{(-23{)}^4}=\sqrt{((-23{)}^2{)}^2}=|(-23{)}^2|={23}^2=529$

$\sqrt{2^6\ast 7^4}=\sqrt{2^6}\ast \sqrt{7^4}=\sqrt{(2^3{)}^2}\ast \sqrt{(7^2{)}^2}=|2^3|\ast |7^2|=2^3\ast 7^2=8\ast 49=392$

$\sqrt{(-3{)}^4\ast 2^6\ast (-0,1{)}^2}=\sqrt{(-3{)}^4}\ast \sqrt{2^6}\ast \sqrt{(-0,1{)}^2}=\sqrt{((-3{)}^2{)}^2}\ast \sqrt{(2^3{)}^2}\ast \sqrt{(-0,1{)}^2}=|(-3{)}^2|\ast |2^3|\ast |-0,1|=3^2\ast 2^3\ast 0,1=9\ast 8\ast 0,1=72\ast 0,1=7,2$