Resposta:
[tex]b)~~(\sqrt[3]{a}) ^{4} =(\sqrt[3]{a} )^{3} .a=a.a=a^{2}[/tex]
[tex]d)~~(6\sqrt{a}) ^{2} =6^{2} .(\sqrt{a})^{2} =36a[/tex]
[tex]f)~~(\frac{a}{b}\sqrt{a})^{2} =(\frac{a}{b} ) ^{2} .(\sqrt{a} )^{2} =\frac{a^{2}.a }{b^{2} } =\frac{a^{3} }{b^{2} }[/tex]
