Question

Помогите решить задачи

Answer 1

1.
$x = \sqrt{ {4}^{2} + {3}^{2}} = \sqrt{16 + 9} = \sqrt{25} = 5$
2.
$x = \sqrt{ {13}^{2} - {4}^{2} } = \sqrt{153} = 3 \sqrt{17}$
3.
$x = \sqrt{ \sqrt{ {5}^{2} } + \sqrt{ {5}^{2} } } = \sqrt{5 + 5} = \sqrt{10}$