Question

Ajutor,repede!Dau coroana!​

Answer 1

c) $\sqrt{0,6*0,2(6)} =\sqrt{\frac{6}{10} *\frac{26-2}{90} } =\sqrt{\frac{6}{10} *\frac{24}{90} }=\sqrt{\frac{12}{5*15} } =\sqrt{\frac{12}{75} } =\frac{2\sqrt{3} }{5\sqrt{3} } =\frac{2}{5}$

d) $\sqrt{144}:(\sqrt{49}-\sqrt{169})= 12 : (7-13) =12 : (-6) = -2$