Odpowiedź :
[tex]\sqrt{2,5^{2} -0,7^{2} } =\sqrt{6,25-0,49} =\sqrt{5,76} =\sqrt{5\frac{76}{100} } =\sqrt{\frac{576}{100} } =\sqrt{\frac{24^{2} }{10^{2} } } =\dfrac{24}{10} =2\dfrac{4}{10}=2\dfrac{2}{5}=2,4[/tex]
[tex]\sqrt{2,5^{2} -0,7^{2} } =\sqrt{6,25-0,49} =\sqrt{5,76} =\sqrt{5\frac{76}{100} } =\sqrt{\frac{576}{100} } =\sqrt{\frac{24^{2} }{10^{2} } } =\dfrac{24}{10} =2\dfrac{4}{10}=2\dfrac{2}{5}=2,4[/tex]