Question

плз помогите СРОЧНОООО АЛГЕБРА 8 КЛАСС​

Answer 1

Ответ:

1)

$\sqrt{49 \times 121} = \\ = \sqrt{49} \times \sqrt{121} = \\ = 7 \times 11 = 77$

2)

$\sqrt{169 \times 25} = \\ = \sqrt{169}{} \times \sqrt{25} = \\ = 13 \times 5 = \\ = 65$

3)

$\sqrt{2} \times \sqrt{8} = \sqrt{2 \times 8} = \\ = \sqrt{16} = 4$

4)

$\sqrt{3} \times \sqrt{27} = \sqrt{3 \times 27} = \\ = \sqrt{81} = 9$

5)

$\sqrt{5} \times \sqrt{20} = \sqrt{5 \times 20} = \\ = \sqrt{100} = 10$