Решите уравнения 1) 1,2 (5-5 х) = -6 (х-1) 2) 3 х^2=4x 3) 1,96-x^2=0

1) 1,2 * (5 - 5 * х) = - 6 * (х - 1);

Раскроем скобки.

1.2 * 5 * (1 - x) = - 6 * (x - 1);

6 * (1 - x) = - 6 * (x - 1);

1 - x = - (x - 1);

1 - x = - x + 1;

-x + x = 1 - 1;

0 * x = 0;

Бесконечно много корней.

2) 3 * х^2 = 4 * x;

3 * x^2 - 4 * x = 0;

x * (3 * x - 4) = 0;

{ x = 0;

3 * x - 4 = 0;

{ x = 0;

3 * x = 4;

{ x = 0;

x = 4/3.

3) 1,96 - x^2 = 0;

1.4^2 - x^2 = 0;

(1.4 - x) * (1.4 + x) = 0;

{ 1.4 - x = 0;

1.4 + x = 0;

{ x = 1.4;

x = - 1.4.