simplifique os radicais. alguém ajudaaaaa

Resposta:
A)
[tex]\sqrt{ a^{2}*m^{7}} \\\\\sqrt{ a^{2}*m^{2}*m^{2}*m^{2}*m} \\\\a * m * m* m* \sqrt{m}\\a *3m \sqrt{m}\\[/tex]
B)
[tex]\sqrt[3]{a^{6}*m^{7}} \\\\\sqrt[3]{a^{3}*a^{3}*m^{3}*m^{3}*m} \\\\a*a*m*\sqrt[3]{m} \\\\2m*m \sqrt[3]{m}[/tex]