Question

Срочно !!!!!!!




БУДУ ДОЛЖНИКОМ

Answer 1

4.

4.1)

${(5x - 1)}^{2} = 0$

$5x - 1 = 0$

$5x = 1$

Ответ:

$x = \frac{1}{5}$

4.2) Нет корней

4.3)

$5 {x}^{2} - 6 = 12 {x}^{2} - 18x - 10x + 15$

$5 {x}^{2} - 6 = 12 {x}^{2} - 28x + 15$

$5 {x}^{2} - 6 - 12 {x}^{2} + 28x - 15 = 0$

$- 7 {x}^{2} - 21 + 28 = 0$

${x}^{2} + 3 - 4x = 0$

${x}^{2} - 4x + 3 = 0$

${x}^{2} - x - 3x + 3 = 0$

$x (x - 1) - 3(x - 1) = 0$

$(x - 1)(x - 3) = 0$

Ответ:

$x = 1$

$x = 3$