Найдите корень уравнения (6a-1)(6a+1)=4a(9a+2)-1
36a² - 1 = 36a² + 8a - 1 36a² - 1 = 36a² - 1 + 8a 36a² - 1 - 36a² + 1 - 8a = 0 - 8a = 0 / : ( - 8) a = 0