Question

va rog am nevoie rapid dau coroana!!!​

Answer 1

2.

$\sqrt{\frac{1}{4} } = \frac{\sqrt{1} }{\sqrt{4} } =\frac{1}{2} \\\sqrt{\frac{25}{9} } = \frac{\sqrt{25} }{\sqrt{9} } =\frac{5}{3} \\\\\sqrt{\frac{144}{49} } = \frac{\sqrt{144} }{\sqrt{9} } =\frac{12}{3} \\\\\sqrt{\frac{400}{121} } = \frac{\sqrt{400} }{\sqrt{121} } =\frac{20}{11} \\\\0.64= \frac{64}{100} \sqrt{\frac{64}{100} } = \frac{\sqrt{64} }{\sqrt{100} } =\frac{8}{10}$

$1.96= \frac{196}{100} \sqrt{\frac{196}{100} } = \frac{\sqrt{196} }{\sqrt{100} } =\frac{14}{10} \\6.25= \frac{625}{100} \sqrt{\frac{625{100} } = \frac{\sqrt{625} }{\sqrt{100} } =\frac{25}{10}$

$0,01 = \frac{1}{100}= \sqrt{\frac{1}{100} } = \frac{\sqrt{1} }{\sqrt{100} } =\frac{1}{10} \\0,0121 = \frac{121}{1000}= \sqrt{\frac{121}{1000} } = \frac{\sqrt{121} }{\sqrt{1000} } =\frac{11}{100}$

1.

$x^{2} = (\frac{1}{2} )^{2} =\frac{1}{4} \\ (\frac{2}{5} )^{2} =\frac{4}{25}\\\\ (\frac{7}{10} )^{2} =\frac{49}{100} \\ (\frac{3}{10} )^{2} =\frac{9}{100} \\\\(-1.2)^{2} = (\frac{12}{10} )^{2} =\frac{144}{100} \\\\ (0.(4))^{2} =(\frac{4}{9} )^{2} =\frac{16}{81} \\\\ (1.(6))^{2} =(\frac{5}{3} )^{2} =\frac{25}{9}$