Question

реши неполное уравнение​

Answer 1

Ответ:

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

$125 - 5 {x}^{2} = 0 \\ - 5 {x}^{2} = - 125 \\ 5 {x}^{2} = 125 \\ {x}^{2} = 125 \div 5 \\ {x}^{2} = 25 \\ 1)x = - 5 \\ 2)x = 5$