a) [tex](2\sqrt{7}) ^{2}[/tex] = 4*7 = 28
b) [tex](\frac{3\sqrt{3} }{2})^{2}[/tex]= [tex]\frac{9*3}{4} = \frac{27}{4}[/tex]
c) [tex]4\sqrt{5^{2} } = 4*5 = 20[/tex]
d) [tex]\frac{1}{3}\sqrt{6} * 3\sqrt{6} = \sqrt{6} *\sqrt{6} = 6[/tex]
e) [tex]7\sqrt[3]{5^{3} } = 7*5 = 35[/tex]
f) [tex](2\sqrt[3]{3})^{3} = 8 * 3 = 24[/tex]
