Question

Помогите пожалуйста​

Answer 1

Ответ:

$2) \sqrt{25x {}^{3} } = \sqrt{5 {}^{2}x {}^{2} \times x} = \sqrt{5 {}^{2} } \times \sqrt{x {}^{2} } \times \sqrt{x} = 5x \sqrt{x}$

$5) \sqrt{16a {}^{9} } = \sqrt{4 {}^{2} a {}^{8} \times a} = \sqrt{4 {}^{2} } \times \sqrt{a {}^{8} } \times \sqrt{a} = 4a {}^{4} \sqrt{a}$