[tex]( {7}^{2} + (2 \times 5 {}^{4} \div 10 - 3 {}^{4} ) \div {2}^{2} ) \div {2}^{2} [/tex]
[tex](49 + ( \frac{2 \times 5 {}^{4} }{10} - 81) \div 2 {}^{2} ) \times \frac{1}{ {2}^{2} } [/tex]
[tex](49 + ( \frac{5 {}^{4} }{5} ) - 81) \div 2 {}^{2} ) \times \frac{1}{4} [/tex]
[tex](49 + ( {5}^{3} - 81) \div {2}^{2} ) \times \frac{1}{4} [/tex]
[tex](49 + \frac{ {5}^{3} - 81}{4} ) \times \frac{1}{4} [/tex]
[tex] \frac{196 + {5}^{3} - 81 }{4} \times \frac{1}{4} [/tex]
[tex] \frac{115 + {5}^{3} }{4} \times \frac{1}{4} [/tex]
[tex] \frac{115 + 5 {}^{3} }{16} [/tex]
[tex] \frac{115 + 125}{16} [/tex]
[tex] \frac{240}{16} [/tex]
simplifici fractia
[tex]15[/tex]
