Răspuns:
a) n=5
b) n=7
Explicație pas cu pas:
a) [tex]n = \sqrt{\frac{144}{100} } + \sqrt{\frac{225}{100} } + \sqrt{\frac{529}{100} } = \frac{12}{10} + \frac{15}{10} + \frac{23}{10} = \frac{12+15+23}{10} = \frac{50}{10} = 5[/tex]
b) [tex]n = \sqrt{\frac{256}{100} } + \sqrt{\frac{676}{100} } + \sqrt{\frac{784}{100} } = \frac{16}{10} + \frac{26}{10} + \frac{28}{10} = \frac{16+26+28}{10} = \frac{70}{10} = 7[/tex]
