Question

Buna seara va rog frumos sa rezolvati exercitiile atasate la poza va rog frumos dau coroana

Answer 1

Toate numerele de sub radical sunt patrate perfecte, adica ies exact de sub radical

$\sqrt{324}=18\\\\ \sqrt{169} =13\\\\\sqrt{256} =16\\\\18+13-16=15$

$\sqrt{\frac{81}{36} } =\frac{9}{6} =\frac{3}{2} \\\\\sqrt{\frac{64}{9} } =\frac{8}{3} \\\\\sqrt{\frac{121}{225} } =\frac{11}{15} \\\\=\frac{3}{2}-\frac{8}{3}+\frac{11}{15} =\frac{-13}{30}$

$\sqrt{\frac{49}{196} =\frac{7}{14} } =\frac{1}{2} \\\\\sqrt{\frac{361}{961} } =\frac{19}{31} \\\\\sqrt{\frac{196}{441} } =\frac{14}{21} =\frac{2}{3} \\\\\frac{1}{2}-\frac{19}{31}+\frac{2}{3}=\frac{93-114+124}{186} =\frac{103}{186}$

Mai multe gasesti aici: https://brainly.ro/tema/1959561

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