Question

решите уравнение (10х-3)^2=(10х+7)^2

Answer 1

(10x - 3)² = (10x + 7)²
(10x - 3)² - (10x + 7)² = 0
(10x - 3 - 10x - 7)(10x - 3 + 10x + 7) = 0
10 = 0 - неверно
20x = -4
x = -0,2.
Ответ: х = -0,2.