Question

ex 18 (c) ajutatima va rog

Answer 1

$19c). \sqrt{( \sqrt{5} -3)^2} - \sqrt{( \sqrt{11}+2 \sqrt{5} )^2 } + \sqrt{(1-2 \sqrt{11} )^2} = \\ \\ =| \sqrt{5} -3|-| \sqrt{11} +2 \sqrt{5} |+|1-2 \sqrt{11} |= \\ \\ =3- \sqrt{5} -(2 \sqrt{5} + \sqrt{11} )+2 \sqrt{11} -1= \\ \\ =3- \sqrt{5} -2 \sqrt{5} - \sqrt{11} +2 \sqrt{11} -1=2-3 \sqrt{5}+ \sqrt{11}$