Предмет: Математика, автор: baton84

помогите, срочно!!!! Дам 15 баллов!​

Приложения:

Ответы

Автор ответа: Zombynella
1

Ответ:

В решении.

Пошаговое объяснение:

1.

√81 = 9;

√3600 = 60;

√0,09 = 0,3;

(√17)² = 17;

2.

√(5² + 11) = √36 = 6;

10 - 5√16 = 10 - 5*4 = 10 - 20 = -10;

3.

х² = 11;   х = ±√11;

х² = -9;  нет решения;

4.

1/3*√0,36 + 1/5*√900 =

= 1/3 * 0,6 + 1/5 * 30 =

= 0,2 + 6 = 6,2;

5.

√х = 4;   (√х)² = 4²;    х = 16;

√х + 6 = 0;     √х = -6;    нет решения;

√(3х + 1) = 4;   (√(3х + 1))² = 4²;   3х + 1 = 16;   3х = 15;    х = 5;

6.

√х/2 - 10 = 8

0,5√х = 18

√х = 18/0,5  (деление)

√х = 36

(√х)² = 36²

х = 1296.

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