Question

Решите уравнение:

5x²-7x+2=0

Answer 1

$5 {x}^{2} - 7x + 2= 0$
$5 {x}^{2} - 2x - 5x + 2 = 0$
$x(5x - 2) - (5x - 2) = 0$
$(5x - 2)(x - 1) = 0$

$5x - 2 = 0 \\ x - 1 = 0$

$x = \frac{2}{5} \\ x = 1$

Ответ: 2/5; 1.