Odpowiedź:
[tex] \sqrt{5 \frac{1}{16} } = \sqrt{ \frac{81}{16} } = \frac{9}{4} = 2 \frac{1}{4} [/tex]
[tex]\sqrt{5\frac{1}{16}} = \sqrt{\frac{5\cdot16+1}{16}} = \sqrt{\frac{81}{16}} = \sqrt{(\frac{9}{4})^{2}} = \frac{9}{4} = 2\frac{1}{4}[/tex]
