Question

Решите уравнения
5x-(3+2x-2x^2)=2x^2-7x+17

Answer 1

5x - (3 + 2x - 2x²) = 2x² - 7x + 17
5x - 3 - 2x + 2x² = 2x² - 7x + 17
5x + 7x + 2x² - 2x² = 17 + 3
12x = 20
x = 20 : 12
х = 1  2/3
Ответ: 1  2/3.