Question

Caucule
$\sqrt{9 + \sqrt{16 + \sqrt{1.44} } }$

Answer 1

$\sqrt{9} + \sqrt{16} + \sqrt{1.44} \\ 3 + 4 + \sqrt{ \frac{36}{25} } \\ 7 + \frac{6}{5} \\ \frac{41}{5}$

Answer 2

$\sqrt{9+ \sqrt{16+ \sqrt{1,44} } }\\\\ \sqrt{9+ \sqrt{16+ \sqrt{ \frac{144}{100} } } } \\\\ \sqrt{9+ \sqrt{16+ \frac{12}{10} } }\\\\ \sqrt{ 9+\sqrt{ \frac{(16\cdot10)+12}{10} } }\\\\\\ \boxed{\sqrt{ 9+\sqrt{ \frac{172}{10} } } }$