[tex]x\sqrt{y} = \sqrt{x^2*y}[/tex]
a) [tex]5\sqrt{3} = \sqrt{75}[/tex]
[tex]7\sqrt{2} = \sqrt{98}[/tex]
[tex]8\sqrt{3} = \sqrt{192}[/tex]
[tex]10\sqrt{7} = \sqrt{700}[/tex]
[tex]-4\sqrt{5} = -\sqrt{80}[/tex]
b)[tex]-\frac{2\sqrt{5} }{3} = -\frac{\sqrt{20}}{3}[/tex]
[tex]-\frac{\sqrt{7} }{2}[/tex] (1^2 = 1 deci 1 radial din 7 = radical din 7)
[tex]-5\sqrt{6} = -\sqrt{150}[/tex]
[tex]-3\sqrt{11} = -\sqrt{99}[/tex]
[tex]-4\sqrt{10} = -\sqrt{160}[/tex]
c)[tex]6\sqrt{15} = \sqrt{540}[/tex]
[tex]-7\sqrt{10} = -\sqrt{490}[/tex]
[tex]-8\sqrt{3} = -\sqrt{192}[/tex]
[tex]-9\sqrt{10} = -\sqrt{810}[/tex]
[tex]9\sqrt{5} = \sqrt{405}[/tex]
d) [tex]11\sqrt{5} = \sqrt{605}[/tex]
[tex]8\sqrt{5} = \sqrt{320}[/tex]
[tex]-6\sqrt{6} = -\sqrt{216}[/tex]
[tex]-\frac{3\sqrt{3} }{5} = -\frac{\sqrt{27} }{5}[/tex]
[tex]-\frac{2\sqrt{7} }{5} = -\frac{\sqrt{28} }{5}[/tex]
e)[tex]-3\sqrt{17} = -\sqrt{153}[/tex]
[tex]-4\sqrt{11} = -\sqrt{176}[/tex]
[tex]-\frac{2\sqrt{13} }{5} = -\frac{\sqrt{52} }{5}[/tex]
[tex]-\frac{5}{9} *\sqrt{10} = -\frac{5\sqrt{10} }{9} = -\frac{\sqrt{250} }{9}[/tex]
