Odpowiedź:
[tex]\sqrt{2\frac{1}{4}}=\sqrt{\frac{2\cdot4+1}{4}}=\sqrt{\frac{8+1}{4}}=\sqrt{\frac{9}{4}}=\frac{\sqrt9}{\sqrt4}=\frac{\sqrt{3^2}}{\sqrt{2^2}}=\frac{3}{2}=1\frac{1}{2}\\\\\sqrt{5\frac{19}{25}}=\sqrt{\frac{5\cdot25+19}{25}}=\sqrt{\frac{125+19}{25}}=\sqrt{\frac{144}{255}}=\frac{\sqrt{144}}{\sqrt{25}}=\frac{\sqrt{12^2}}{\sqrt{5^2}}=\frac{12}{5}=2\frac{2}{5}[/tex]
