[tex]\sqrt{81} = 9\\\sqrt[3]{-1} =-1\\\sqrt{64} + \sqrt[3]{64} = 8 + 4 = 12\\\sqrt{0,16} = 0,4\\\sqrt{ \frac{16}{121} } = \frac{4}{11} \\\sqrt\frac {36}{25} {} = \frac{6}{5} \\\\\sqrt{196 * 4} + \sqrt{100} = 14 * 2 + 10 = 38\\\sqrt[3]{27*64*125} = 3*4*5 = 60[/tex]
