Answer:
[tex]\sqrt{28} =\sqrt{(7)(4)} =2\sqrt{7} \\\sqrt{40} =\sqrt{(10)(4)} =2\sqrt{10} \\\sqrt{108} =\sqrt{(36)(3)} =6\sqrt{3} \\\sqrt{125} =\sqrt{(25)(5)} =5\sqrt{5}[/tex]
[tex]-6\sqrt{81} =-6(9)=-54[/tex]
[tex]\sqrt{80} =\sqrt{(16)(5)} =4\sqrt{5)} \\3\sqrt{60} =3\sqrt{(15)(4)} =(3)(2)\sqrt{15} =6\sqrt{15}[/tex]
[tex]-\sqrt{200} =-\sqrt{(100)(2)} =-10\sqrt{2}[/tex]
[tex]4\sqrt{320} =4\sqrt{(64)(5)} =(4)(8)\sqrt{5} =32\sqrt{5}[/tex]
Hope this helps
