Question

[tex] x^{2} +3 x=0
-2 x^{2} -4 x=0

Answer 1

Решение
1)  x² + 3x = 0
x*(x + 3) = 0
x₁ = 0
или
x + 3 = 0
x₂ = - 3
2)  - 2x² - 4x = 0
-2x*(x + 2) = 0
- 2x = 0
x₁ = 0
или
 x + 2 = 0
x₂ = - 2