Odpowiedź:
a)[tex]\sqrt{121} +\sqrt{49} -\sqrt{225} =11+7-15=18-15=3[/tex]
b)[tex]\sqrt{196} -\sqrt{169} -\sqrt{144} =14-13-12=14-25=-11[/tex]
c)[tex]\sqrt{0,25} +\sqrt{1,44} +\sqrt{6,25} =0,5+1,2+2,5=4,2[/tex]
d)[tex]\sqrt{3,61} -\sqrt{1,21} -\sqrt{0,09} =1,9-1,1-0,03=1,9-1,13=0,77[/tex]
e)[tex]\sqrt{\frac{81}{400} } +\sqrt{\frac{9}{100} } -\sqrt{\frac{64}{25} } =\frac{9}{20} +\frac{3}{10}-\frac{8}{5} =\frac{9}{20} +\frac{6}{20} -\frac{32}{20} =\frac{15}{20} -\frac{32}{20}=-\frac{17}{20}[/tex]
f)[tex]\sqrt{3\frac{6}{25} } -\sqrt{2\frac{1}{4} } +\sqrt{1\frac{7}{9} } =\sqrt{\frac{81}{25} } -\sqrt{\frac{9 }{4} } +\sqrt{\frac{16}{9} } =\frac{9}{5} -\frac{3}{2} +\frac{4}{3} =\frac{54}{30} -\sqrt{\frac{45}{30} } +\frac{40}{30} =\frac{94}{30} -\frac{45}{30} =\frac{49}{30}[/tex]
Szczegółowe wyjaśnienie:
