Question

-x^2+7x-10=0
Решите уравнение
помогите

Answer 1

-x² +7x - 10 = 0
x² - 7x + 10 = 0
D = (-7)² - 4 · 1 · 10 = 49 - 40 = 9; √9 = 3
x1 = (7 - 3)/2 = 2
x2 = (7 + 3)/2 = 5
Ответ: 2 и 5.

Answer 2

х^2 - 7x + 10 = 0
D = 49 - 4 * 10 = 49 - 40 = 9      √D = 3
x1 = (7 + 3) / 2 = 5
x2 = (7 - 3) / 2 = 4
Ответ: х1 = 5;  х2 = 4