Решение (Х в квадрате - 5х+6):(Х-2)
1) x² - 5x + 6 = ( x - 3 )( x - 2 ) D = 25 - 24 = 1 = 1² x1 = ( 5 + 1 ) : 2 = 3 x2 = ( 5 - 1 ) : 2 = 2 2) ( ( x - 3 )( x - 2 )) : ( x - 2 ) = x - 3